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Ruger 77/50 User's Manual

1. WARNING BEFORE SHIPPING ANY FIREARM BE ABSOLUTELY CERTAIN THAT IT IS UNLOADED DO NOT SHIP BLACK POWDER OR PERCUSSION CAPS WITH A FIREARM SHIPPING FIREARMS FOR REPAIR RUGER MODEL 77 50 rifles returned to the factory for repair should be sent to Sturm Ruger amp Company Inc Product Service Department 411 Sunapee Street Newport New Hampshire 03773 Telephone 603 863 3300 Guns should be sent prepaid We will not accept collect shipments The Federal Gun Control Act as well as the laws of most States and localities do not prohibit an individual who is not otherwise barred from purchasing or possessing a firearm from shipping a firearm directly to the manufacturer for repair However before you ship your rifle to us be certain that your State or locality does not have a law or regulation which will prohibit you from receiving the rifle from us after it has been repaired If such receiving is prohibited then please have a Federally Licensed firearms dealer ship the gun to us If your rifle is sent to us by a dealer it will be returned to him after being repaired If a handgun pistol or revolver is shipped by an individual who does not hold a Federal Firearms License it must be shipped via U P S Persons who do not hold a Federal Firearms License are prohibited by Federal law from shipping a handgun by Mail Handguns mailed in violation of the law are impounded by the Post Office Please do not include rifle case slin
2. Sometimes surface discoloration occurs from perspiration or from contact with some types of gun cases Rusting may occur as a result of the firearm being exposed to moisture salt air or chemicals Minor discoloration can usually be removed by rubbing the stainless area with an abrasive ink eraser crocus cloth or metal polishing compound When using any of these abrasives proceed with care and use light pressure to achieve a blending of color with those areas that are not discolored External surfaces most subject to rusting from handling or from exposure to the elements should be cleaned and wiped dry after use or after exposure to adverse conditions If the rifle is to be stored coat it with a light film of oil or preservative Where the rifle is in continuing use and the presence of oil or grease would be objectionable then the external surfaces can be coated after cleaning and drying with a paste wax formulated for use on metals Apply the wax sparingly allow time for it to dry hard then buff lightly with a soft cloth When applying the wax take care that it does not get into the mechanism or on the functioning parts or in the bore ATTACHING RUGER SCOPE RINGS Each Ruger telescope ring is a mated assembly of a top and a base Do not mix the parts of the two ring assemblies as they are not interchangeable On the underside of each mounting ring assembly there is an integral lug located off center with respect to the
3. LOADING POWDER Place the bullet in the muzzle of the charged barrel with the flat spot sprue of the round ball or the point of a lubricated conical projectile facing upward out of the muzzle See Fig 7 If you lubricate your projectile be sure to use a lubricant designed specifically for black powder Ordinary petroleum based lubricants can cause fouling to build up and make it difficult to fully seat the projectile on the powder charge with the resulting danger of a burst barrel and injury to the shooter and bystanders CENTER BALL ON PATCH INSERTING CONICAL INSERTING PROJECTILE OR PATCHED BALL If you wish to use a patch on your round ball for tighter fit or improved sealing of the ball in the barrel place a 1 1 2 diameter patch lubricated with a commercial black powder gun grease centered over the muzzle before you place a ball into the muzzle See Fig 8 Again align the sprue of the bullet in the center of the bore facing upward out of the muzzle See Fig 9 p 15 Some shooters now push the ball slightly into the muzzle with a short starter rod of about 1 in length and then trim away any excess patch material protruding from the muzzle but this is optional 14 Remove the ramrod from under the barrel by pulling it downward out of its recess in the barrel and then forward upward out of the stock and ramrod thimble Grasp the ramrod around its side and with a firm even stroke seat the bullet firmly on
4. THIMBLE HEAD IN NOTCH REINSTALL RAMROD 6 To assemble the bolt a Lubricate the bolt sleeve threads and the angled cocking cam surface on the rear of the bolt Slide the bolt sleeve assembly into the bolt from the rear Screw SCREW BOLT SLEEVE INTO BOLT the bolt sleeve into the bolt to position shown clockwise past notch See Fig 32 b Carefully remove the wrench handle on pin from cocking piece See Fig 33 REMOVE PIN 33 c Carefully rotate SLOWLY counterclockwise until COUNTERCLOCKWISE cocking piece snaps into small notch and no further Only when the bolt is correctly Sept assembled should it be AT SMALL inserted into the NOTEM receiver See Fig 34 FINAL BOLT ASSEMBLY d With safety in load unload middle position insert the bolt into the receiver See Fig 35 LOAD UNLOAD POSITION REINSERT BOLT REGARDING ACCURACY The accuracy of any muzzleloading rifle can vary depending upon the make and type of projectiles and powder charge used in it Such being the case if your RUGER MODEL 77 50 rifle does not perform to expectations it is advisable to try several brands and types of projectiles to determine which one delivers the best accuracy before proceeding further If your rifle is not as accurate as you believe it should be before concluding that some serious fault exists run the following checks l Becertain the barrel ban
5. REMOVE THE RAMROD FROM THE BARREL If you replace it in the thimble under the barrel you will not leave it behind IF YOU FORGET TO LOAD POWDER If you have inadvertently loaded a ball without first loading a powder charge you must remove the breech plug with the breech plug wrench and push the ball from the barrel See Unload p 20 before starting all over again 4 CAPPING THE SAFETY IN NIPPLE LOAD UNLOAD Remember that the pede NIPPLE safest way to carry any loaded muzzleloading rifle is uncapped Cap it only just before you are immediately ready to fire See Handling Warning p 17 CAPPING THE NIPPLE Be sure you use only 11 percussion caps of good quality and correct size With the bolt open carefully place a 11 cap on to the nipple An inline capper sold commercially is preferred by some shooters It is not required but is especially helpful if a scope is mounted on the rifle Do not put oil grease or dirt into the open end of the cap while loading misfires could result The caps should be completely seated on the nipple without undue pressure Caps should only be tight enough so that they do not fall off the nipple when the barrel is elevated with the bolt open See Fig 11 WARNING D is dangerous to attempt to use caps which are too small Never force a cap on to the nipple Since caps fire by percussion excess force or a blow in seating them can cause the caps to discharge fir
6. William B Ruger continued to direct the company alone and today as Chairman of the Board he is actively involved in the creative engineering of new products and continues to provide the leadership which has made this 49 year old company a sound and successful enterprise Sturm Ruger amp Company in this relatively short time has established itself as a leading small arms design organization developing a unique and broad line of fine quality sporting military and police firearms to become one of the world s most famous producers of revolvers pistols rifles and shotguns From 1949 thru 1998 Ruger craftsmen have built many millions of firearms During its four decades of growth and progress under the leadership of William B Ruger the company has developed a business philosophy and implemented policies which represent a constructive influence in the life of modern America From the beginning Sturm Ruger amp Company played a positive role in conservation efforts and has supported the interests of the National Rifle Association National Shooting Sports Foundation and many regional sportsmen s organizations The company has always endeavored to market its firearms for constructive and recreational purposes to emphasize the traditional aspects of shooting to render meaningful public services and to encourage shooters in constructive and responsible participation in the shooting sports Today Sturm Ruger amp Company is particularly
7. blade in its down flat position DISASSEMBLY Rifle Must Be Unloaded Prior To Disassembly Keep the rifle pointed in a safe direction Put the safety in the load unload position OPEN THE BOLT AND CHECK TO BE CERTAIN THAT THE RIFLE IS UNCAPPED AND UNLOADED Run the ramrod completely down the barrel to make sure the rifle has no bullet or powder in the barrel TO REMOVE BOLT Lift the bolt handle up Depress the bolt stop on the left side of the receiver Remove the bolt from the rifle Before starting bolt disassembly study Figure 21 TO DISASSEMBLE THE BOLT a While holding the bolt rotate the bolt sleeve clockwise as viewed from the rear of the rifle to position shown in Figure 18 p 24 The bolt sleeve should be in the same position it is in when taken out of the receiver but the bolt sleeve may need to be rotated clockwise until the disassembly hole is fully exposed IN LA Bs 23 b Insert the small end of breech plug wrench handle or suitable nail into the disassembly hole in the striker cocking piece assembly to hold it in the rear position Figure 19 NOTE The pin should be as close as possible in size to the hole diameter and at least 2 inches long so that it can be used to lever the cocking piece to the rear when reassembling the bolt stop assembly into the bolt Do not use a soft paper clip etc Note that if you use the breech plug handle as the bolt disassembly pin you wil
8. folding leaf rear sight is adjustable for elevation The slide must be moved one graduation to change the point of impact by approximately one inch at 25 yards Shooting to determine the slide setting for zero at a particular distance should be done from a bench rest and over a measured distance Use only a small screwdriver with a blade tip that exactly fits the screw head Loosen the screws only slightly so the slide doesn t move too freely Move the slide in the direction you want the point of impact of the bullet to move When the slide is positioned at the desired height carefully tighten both screws Lateral windage adjustment is made by drifting the sight base in its slot Place a short brass rod against the sight base and only the base and tap the sight in the direction you wish to move the point of impact SUGGESTED SIGHT PICTURE Top of front sight even with top of rear sight slide Front sight centered in notch of rear sight slide Target bull s eye centered on top of front sight 37 SERVICE AND PARTS POLICY If you have any question with regard to the performance of yur RUGER MODEL 77 50 rifle please write or call 603 863 3300 our Product Service Department 411 Sunapee Street Newport New Hampshire 03773 fully describing all circumstances and conditions involved If you should return your rifle to the factory for repair or order parts for it please comply with the following suggestions for prompt service
9. mindful of those elements which have contributed to the creation of its success and extends heartfelt thanks to its many loyal employees and customers A current catalog of Ruger firearms is available free upon request to Sturm Ruger amp Co Inc Southport CT 06490 47 WHY NO WARRANTY CARD HAS BEEN PACKED WITH THIS NEW RUGER FIREARM The Magnuson Moss Act Public Law 93 637 does not require any seller or manufacturer of a consumer product to give a written warranty It does provide that if a written warranty is given it must be designated as limited or as full and sets minimum standards for a full warranty Sturm Ruger amp Company Inc has elected not to provide any written warranty either limited or full rather than to attempt to comply with the provisions of the Magnuson Moss Act and the regulations issued thereunder There are certain implied warranties under state law with respect to sales of consumer goods As the extent and interpretation of these implied warranties varies from state to state you should refer to your state statutes Sturm Ruger amp Company wishes to assure its customers of its continued interest in providing service to owners of Ruger firearms STURM RUGER amp Company Inc Southport Connecticut 06490 U S A http www ruger firearms com A COPY OF THE INSTRUCTION MANUAL FOR ANY RUGER FIREARM IS AVAILABLE FROM THE FACTORY FREE ON REQUEST THESE INSTRUCTION MANUALS CONTAI
10. the bore chamber bolt receiver and other parts of the rifle There is no fixed rule as to how frequently the cleaning should be carried out but the alert gun owner soon learns that any firearm functions most reliably and accurately when it is free of accumulations of grease and other firing residues Basic cleaning equipment includes A correct size cleaning rod equipped with bore brushes fiber and brass and a tip in which a cloth patch can be inserted patches powder solvent lubricant small lint free cloths and a toothbrush Use correct size patches and brushes Larger sizes will bind in the bore and can be very difficult to remove Timely attention to the simple procedures which follow will help ensure that your rifle remains in top condition for years of use 1 Be sure rifle is unloaded 2 Remove bolt from receiver See p 20 It is not necessary to remove the stock for cleaning but removal may help prevent damage to the stock from the breech plug wrench handle etc Removal also makes it easier to clean the trigger and safety mechanism INSERT CLEANING TUBE 3 Disassemble bolt according to instructions on pp 23 amp 24 Then place bolt components except for mainspring which should not be gotten wet in pan filled with very hot water and soap solution to soak THREAD FULLY 4 Unscrew and remove breech plug from INTO RECEIVER inside receiver It may be necessary to tap the b
11. the powder charge Do not push down on the ramrod tip with the palm of your hand in the event that the powder charge ignites while you are loading See Fig 10 For maximum accuracy the powder charge should be very lightly compressed by the bullet Be sure that the bullet is seated deeply enough so that it rests firmly against the powder charge Do not leave an air space between the powder and the bullet This can cause the barrel to burst when firing KEEP HAND OFF END NOTE 7 3 PROTRUSION WHEN PROJECTILE IS FULLY SEATED ON POWDER 10 STARTING PROJECTILE FULLY SEAT PROJECTILE G You should not pound on the ramrod to fully seat the projectile since this can deform the bullet cause accuracy problems or even set off the powder charge and fire the rifle Once you determine that you have fully seated the projectile of your choice onto the correct powder charge note and mark how much of the ramrod protrudes from the muzzle You should always be sure that no more of the ramrod protrudes after loading the rifle otherwise you may have loaded too much powder multiple projectiles or failed to have fully seated the ball onto the powder charge Firing a rifle with any of these conditions can result in a wrecked rifle and injury to the shooter and bystanders Be safe unload your rifle and start over again if your ramrod protrudes excessively from the muzzle after loading See To Unload p 20 H
12. trigger guard counterclockwise and carefully remove trigger guard See Fig 24 Note that the longer screw goes in the rear hole of the trigger guard A UNSCREW sl UNSCREW 9 REMOVE GUARD REMOVE TRIGGER GUARD c VERY CAREFULLY lift the barrel receiver assembly from the stock See t BARREL RECEIVER ASSEMBLY SEPARATE BARREL RECEIVER FROM STOCK 26 THIS IS AS FAR AS YOU NEED TO DISASSEMBLE THE RIFLE FOR ROUTINE CLEANING AND MAINTENANCE SEE P 30 FOR REASSEMBLY INSTRUCTIONS DETAILED DISASSEMBLY INSTRUCTIONS FOLLOW FOR FURTHER DISASSEMBLY ONLY WHEN REQUIRED IN CASES OF HEAVY FOULING IMMERSION IN SALT WATER ETC DETAILED DISASSEMBLY 1 To remove the trigger Safety Selector should be in the Fire position a While holding the trigger in place press out the trigger pivot pin Caution Trigger is spring loaded and under tension be careful b Remove the trigger and trigger sear spring 2 To remove the bolt stop and sear a Press out the sear bolt stop pivot pin b Remove the bolt stop and bolt stop spring c Turn receiver upside down and slide sear forward Sear will drop out of the top slot in the receiver 3 To remove safety assembly a Rotate the safety selector so that the upper section is positioned fully over the center of the receiver tang b While holding the safety selector in place with thumb and forefinger slide the retainer up out of receiver Caution Safety Selecto
13. Before taking the gun apart set up to do it properly Cover the work surface with a soft cloth so that the gun finish and sights will not be damaged and provide a tray into which the parts can be put as they are removed from the gun It is preferable to carry out these procedures on a workbench or table which has a covered top A piece of shallow nap rug or an old coarse blanket is an ideal covering Such a covering not only reduces the chances of the rifle slipping and being scratched but it serves also to trap pins plungers and springs that may otherwise get lost It is advisable to have a container such as shoebox in which each part can be placed as it is removed from the gun Before attempting to disassemble the rifle for the first time study the parts drawing and parts list so as to be familiar with the relative position appearance and name of each part Carry out the disassembly slowly and carefully note the position of the part in the gun before starting to remove it If a part is under spring tension such as the Safety Selector Bolt Stop Trigger remove it cautiously and anticipate the direction the spring and plunger are most likely to jump WARNING If a spring or plunger become lost do not use a substitute Springs of correct tension are vital to the safe and reliable performance of firearms See Ordering Parts p 39 Before starting disassembly remove the sling scope and rings and place the rear sight
14. GREAT IMPORTANCE ARE FOUND ON THE FOLLOWING PAGES Alterations Firing Manual Safety Reloading Lead Exposure Mishandling Ammunition Disassembly Black Powder Lubrication Percussion Caps Storage Loading Malfunctions Handling Parts Purchasers OTHER CAUTIONS AND WARNINGS APPEAR THROUGHOUT THE MANUAL FIREARMS ARE DANGEROUS WEAPONS MUZZLELOADING BLACK POWDER FIREARMS REQUIRE SPECIAL PRECAUTIONS READ THE INSTRUCTIONS AND WARNINGS IN THIS MANUAL THOROUGHLY AND CAREFULLY BEFORE USINC WARNING ALTERATIONS This product was designed to function properly in its original condition Alterations can make it unsafe Do not alter any part or add or substitute parts or accessories not made by Sturm Ruger amp Co Inc GENERAL INFORMATION AND MECHANICAL CHARACTERISTICS The rifle you have chosen the RUGER HODEL 77 50 muzzleloading rifle is an original Ruger design It is manufactured to our regular standards of strength and reliability entirely in modern Ruger factories in the U S A High quality steels and coil springs are used throughout the same as in our centerfire rifles It is a bolt action single shot muzzleloading black powder rifle of modern design It gives the black powder shooter many of the convenience and safety features of modern Ruger centerfire rifles combined with traditional muzzleloading rifle characteristics It is particularly useful for black powder hunting and target shooting The RUGER MODE
15. INSTRUCTION MANUAL FOR BLUED amp CALIBER STAINLESS 50 Round or STEEL Conical Ball BLACK POWDER OR PYRODEX ONLY RUGER MODEL 77 50 INLINE MUZZLELOADING BLACK POWDER PERCUSSION RIFLE READ THE INSTRUCTIONS AND WARNINGS IN THIS MANUAL CAREFULLY BEFORE USING THIS FIREARM For Product Service on This Model Please Call 603 863 3300 See p 38 STURM RUGER amp Company Inc Southport Connecticut 06490 U S A THIS INSTRUCTION MANUAL SHOULD ALWAYS ACCOMPANY THIS FIREARM AND BE TRANSFERRED WITH IT UPON CHANGE OF OWNERSHIP OR WHEN THE FIREARM IS LOANED OR PRESENTED TO ANOTHER PERSON 77 50 3 98 RI FIREARMS SAFETY YOUR RESPONSIBILITY SAFETY MUST BE THE FIRST AND CONSTANT CONSIDERATION OF EVERY PERSON WHO HANDLES FIREARMS AND AMMUNITION This Instruction Manual is designed to assist you in learning how to use and care for your RUGER MODEL 77 50 muzzleloading rifle properly Only when you are certain you fully understand the Manual and can properly carry out its instructions should you practice loading etc with live ammunition If you have any doubts about your ability to handle or use a particular type of gun safely then you should seek supervised instruction Such personalized instruction is often available from gun dealers gun clubs or police departments If none of these sources can help you write to the National Rifle Association 11250 Waples Mill Road Fairfax VA 22030 7400 They will as
16. If you are uncertain as to which components your rifle is loaded with do not fire it you must unload your rifle and remove the unknown components IMPROPER AMMUNITION DESTROYS GUNS WARNING BLACK POWDER Black Powder is an extremely sensitive propellant and is readily ignited by heat spark static electricity friction pressure impact etc Unlike smokeless powder Black Powder will ignite with great violence and rapidity even when unconfined Never Pour Black Powder should be handled only in Powder Directly very small quantities Never pour powder From Flask directly from a flask or powder horn into any muzzleloading firearm Never smoke while handling Black Powder Many shooters pre weigh single charges into small containers for use on the range or in the field Never fire the rifle near an open powder container or an explosion may result If you are not familiar with safe handling procedures for Black Powder and for muzzleloading firearms in general you should obtain one of the authoritative muzzle loaders Manuals and study it carefully before beginning to shoot BLACK POWDER IS EXPLOSIVE PROJECTILES The RUGER MODEL 77 50 is designed to use a 500 diameter pure lead round ball or lubricated conical bullet of pure lead a 490 round ball with a lubricated 010 015 thick cloth patch or a smaller diameter projectile encased in a 500 diameter sabot Bullets of either type can be purchased fr
17. L 77 50 is muzzleloading percussion rifle intended for use with black powder percussion caps soft lead and jacketed saboted projectiles It has a precision rifled barrel with a 1 in 28 rifling twist It does not fire conventional cartridges but is instead loaded from the muzzle of the barrel It is of bolt action operation and must be cocked and capped by opening the bolt placing a cap on the nipple and then closing the bolt before normally firing the rifle by pulling the trigger Like any such rifle it is to be USED WITH BLACK POWDER OR PYRODEX ONLY and its safe use requires that the shooter be thoroughly familiar with the special characteristics of these firearms Other notable features of the RUGER MODEL 77 50 rifle include three position safety in line bolt action ignition a fast lock time trigger mechanism non adjustable a flush positioned bolt stop bolt release a hardwood stock with a rubber recoil pad and studs to which sling swivels can be attached The receiver of the RUGER MODEL 77 50 rifle incorporates integral scope mount bases see illustration next page It also comes with open sights a gold bead front sight and a folding leaf rear sight which is adjustable for elevation and windage Disassembly of the rifle to its major components is readily accomplished by removal of two screws and the barrel band The bolt assembly can be quickly disassembled for cleaning All mechanical components are m
18. N IMPORTANT WARNINGS WHICH MUST BE UNDERSTOOD BEFORE USING THESE FIREARMS RUGER the Sturm Ruger logo SINGLE SIX BLACKHAWK REDHAWK SECURITY SIX SPEED SIX SERVICE SIX BEARCAT OLD ARMY 10 22 MINI 14 MINI THIRTY RANCH RIFLE M77 77 22 GP 100 SP101 P 85 AND VAQUERO are registered U S trademarks 77 50 is a Ruger trademark
19. RDERING PARTS parts orders for the MODEL 77 50 rifle should be sent to Sturm Ruger amp Co Inc Product Service Department 411 Sunapee Street Newport New Hampshire 03773 We cannot comply with open account or C O D requests Payment in the form of a check money order Visa or Mastercard must accompany your order Credit Card orders must include the account number expiration date and whether it is a Visa or Mastercard account Minimum parts order is 1 00 plus a 3 50 shipping and handling charge Order parts by Part Number and Part Name and include the entire serial number of the firearm for which the parts are being ordered The price shown for parts does not include the minimum net labor charge of 15 00 plus 5 00 shipping and handling charge if the parts are factory fitted factory fitted parts are fitted on an exchange basis only We will not return the replaced parts Because the receiver of the Model 77 50 rifle part number J00110 15 a serial numbered component it is defined as a firearm by Federal law and is not sold as a separate component Parts designated by an asterisk must be factory fitted These parts are fitted on an exchange basis only We will not return the replaced parts We will not return any part that is broken malfunctioning badly worn or has been modified See Warning Parts Purchasers above 39 PARTS LIST AND SUGGESTED RETAIL PRICES Design prices and specifications subj
20. URELY amp UNLOADED REASSEMBLY Again Be Sure Rifle Is Unloaded 1 To replace the safety assembly a Place the safety selector detent and safety selector detent spring into the hole in the receiver b Setthe safety selector in place with its upper section positioned over the center of the receiver tang c While holding the safety selector in place with thumb and forefinger slide the safety selector retainer into dovetail from the top Align the notch in the safety selector retainer with the sear pivot pin hole 2 To replace the bolt stop and sear a Replace the bolt stop and bolt stop spring Partially insert sear bolt stop pin through bolt stop spring and receiver flush with sear slot b Place the rear end the end with the hole in it of the sear into the slot from the top of the receiver Swing the rear end of the sear up and slide the sear into position until the hole in the sear is aligned with the mating holes in the receiver Press in sear bolt stop pin until head of pin stops against bolt stop 30 3 To replace the trigger a Rotate safety to fire position b Place the trigger sear spring over the dimple in the trigger c Assemble the trigger while aligning the spring with the dimple on the sear d While holding the trigger in position replace the trigger pivot pin 4 To replace the breech plug l l DON T PLUG a Lubricate the breech plug nipple NIPPLE HOLE assembly threads thoroughly with a go
21. Y BEFORE 15 FIREARM MAN USING TH 43 A safe direction must take into account the fact that a bullet may penetrate a wall ceiling floor window etc and strike a person or damage property Make it a habit to know exactly where the muzzle of your gun is pointing whenever you handle it and be sure that you are always in control of the direction in which the muzzle is pointing even if you fall or stumble Keep your finger off the trigger until you are ready to shoot 3 5 SHOULD BE UNLOADED WHEN NOT IN USE Firearms should be loaded only when you are in the field or on the target range or shooting area ready to shoot Firearms and ammunition should be securely locked in racks or cabinets when not in use Ammunition should safely be stored separate from firearms Store your firearms out of sight of visitors and children It is the gun owner s responsibility to be certain that children and persons unfamiliar with firearms cannot gain access to firearms ammunition or components 4 BE SURE THE BARREL IS CLEAR OF OBSTRUCTIONS BEFORE SHOOTING Even a bit of mud snow or excess lubricating oil or grease in the bore or an improperly seated bullet may cause the barrel to bulge or even burst on firing and can cause serious injury to the shooter and bystanders Be sure that you are using projectiles of the proper caliber for the gun you are using If the report or recoil on firing seems weak or doesn t seem q
22. ace eyes and hands away from the muzzle while reloading and always wear eye and hearing protection Hold the ramrod around its sides never place your hand over the end of the ramrod so that it would injure your hand if the powder charge goes off propelling the ramrod out while reloading DON T LOAD IN A HURRY 7 RELOADING After firing the striker will remain down Raise the bolt handle put the safety in load unload and draw the bolt to the rear in a firm smooth stroke This will expose the nipple so you can remove the fired cap fragments Fragments clinging to the nipple may be removed with the fingers and fragments clinging to the bolt can be dislodged by fully pulling the bolt back smartly against the bolt stop To fire subsequent shots repeat all preceding steps 3 6 above It is not necessary to fire a cap in between shots to clear the nipple but you should be sure that the nipple is clear before reloading A thin wire or similar tool works well for this 18 Best results are obtained by cleaning the bore after each shot before reloading Soak a patch in black powder solvent or bore lubricant place it over the front end of the ramrod push it completely into the bore and pull it completely out of the muzzle If it is difficult to remove push the patch back down and then up until it can be removed This swabbing after each shot makes reloading much easier Never try to reload another projectile if it is exces
23. ade of heat treated chrome molybdenum or stainless steel with music wire coil springs throughout the mechanism The mechanism of the RUGER MODEL 77 50 provides for security against accidental discharge when properly handled As with any other firearm however it must be used with strict attention to correct safety practices some of which are unique to muzzleloading firearms In addition the rifle should be inspected frequently to assure that it is working properly The RUGER MODEL 77 50 Officer s Model has the same mechanism and operation as the standard Model 77 50 but is furnished with a special straight gripped walnut stock with cut checkered grip and forend and a curved butt plate reminiscent of the Officer s Model Springfield rifles privately purchased by Calvary officers over a century ago The RUGER MODEL 77 350 is also available in stainless steel construction with a laminated stock for increased corrosion resistance and protection from the elements Recoil Pad Rear Sling Swivel Safety Shown ON Receiver NOMENCLATURE Barrel Muzzle Barrel Band Front Sight Front Sling Ramrod Swivel Thimble Ramrod Ramrod Tip Scope Mount Bases Rear Sight Bolt Handle Bolt Sleeve Striker Cocking Piece Disassembly Hole Trigger Guard an Bolt Stop Trigger Figure 1 Components frequently referred to are identified In these photographs the cocking piece is shown cocked protruding fr
24. arge If the rifle is dropped the bullet should be fully reseated against the powder charge or it might act as an obstruction and cause the barrel to burst upon firing When afield periodically check to see if your bullet has remained fully seated on the powder charge by inserting the ramrod and pushing the projectile fully downward onto the powder ANY GUN MAY FIRE IF DROPPED TO UNLOAD Keep rifle pointed in a safe direction Completely unload the rifle immediately when you are finished shooting by removing cap powder and ball or fire it into a safe backstop It is much easier and safer to fire any muzzleloading firearm rather than attempt to unload it However if this is impossible or if you are uncertain that correct components have been safely loaded the rifle should be unloaded in accordance with the following steps 1 Be sure the rifle is pointing in a safe PUT SAFETY IN direction LOAD UNLOAD POSITION 2 Carefully place the safety in the load unload position See Fig 12 Keep fingers away from trigger at all times during unloading 3 Open action and carefully A OPEN ACTION REMOVE CAP remove the a percussion cap and any cap fragments or priming compound from the nipple See SAFETY IN Fig 13 LOAD UNLOAD POSITION OPEN ACTION REMOVE CAP PRESS BOLT STOP 4 Depress bolt stop and OD BOLT BACK completely remove the bolt rearward from the recei
25. ce on the part of the shooter of the basic rules of safe gun handling The following rules must be observed by gun users at all times Safe gun handling is not just desirable it is absolutely essential to your safety the safety of others and the continuation of gun ownership and sport shooting as we know it today 1 LEARN THE MECHANICAL AND HANDLING CHARACTERISTICS OF THE FIREARM YOU ARE USING Not all firearms are the same The method of carrying and handling firearms varies in accordance with the mechanical provisions for avoiding accidental discharge and the various proper procedures for loading and unloading No person should handle np any firearm without first having thoroughly familiarized himself with 26 Qn 777 the particular type of firearm he is e Ee og using and with safe gun handling in general 2 ALWAYS KEEP THE MUZZLE POINTED IN A SAFE DIRECTION Be sure of the bullet stop behind your target even when dry firing Never let the muzzle of a firearm point at any part of your body or at another person This is particularly important when loading or unloading a firearm In the event of an accidental discharge no injury can occur as long as the muzzle Is pointing in a safe direction A safe direction means a direction which will not permit a discharged bullet to strike a person or to strike an object from which the bullet may ricochet ONS NSTRUCTI NINGS IN THIS 1 n WAR CAREFULL
26. d and the trigger guard screws are snugly tightened 2 Be certain the bore is clean and free from accumulated fouling deposited by black powder and lead bullets See the Care and Cleaning section of this Manual pp 27 30 3 Check the sights or scope mounting system for tightness setting and alignment 4 Try increasing or decreasing the powder charge you use never exceeding 120 grains of powder The heaviest charges are usually the least accurate and give the most powder fouling making consistent shot to shot accuracy difficult 34 If everything 15 tight the bore is clean the sights are properly aligned and secure but the accuracy problem persists DO NOT alter the stock bedding in any way Do not scrape away wood and do not bed with glass plastic epoxy etc Once a rifle stock has been altered it cannot be reworked by our Product Service Department If you still have an accuracy problem write a brief letter to our Product Service Department 411 Sunapee Street Newport New Hampshire 03773 and describe the nature of the problem based on the use of the specific components and load you use You will receive a prompt response from us and if indicated detailed instructions with regard to the return of the rifle WARNING MALFUNCTIONS If the bolt hangs up jams or binds when being closed do not attempt to force it forward by pushing or striking the bolt handle Most failures to close are caused by impro
27. ect to change without notice SPECIFY MODEL AND CALIBER WHEN ORDERING RUGER MODEL 77 50 PERCUSSION RIFLE See Exploded View on Page 42 OV Caliber Part Name Part No Model 50 Blued Stainless Accessory Kit Includes Cleaning Tube J29001 All Models 9 75 Breech Plug Wrench amp Wrench Handle Barrel 0J8012 77 50 RS 77 50 RSO 65 00 Barrel K0J8012 K77 50 RSBBZ 118 00 Barrel Band J06801 Models 6 00 Barrel Band Screw 69 All Models 50 Bolt Handle KJ01006 All Models 50 00 Bolt Lock Plunger KJ02600 All Models o 2 00 Bolt Lock Plunger Retainer J04600 All Models 50 Bolt Lock Plunger Spring J04500 All Models 50 Bolt Sleeve KJ01700 All Models 18 75 Bolt Stop J05302 77 50 RS 77 50 RSO AD Bolt Stop KJ5302T K77 50 RSBBZ 4 00 Bolt Stop Plunger Spring J05401 All Models o 50 Breech Plug KJ06705 All Models 9 50 Breech Plug Wrench J09001 All Models 6 00 Breech Plug Wrench Handle J09100 All Models 1 00 Butt Plate C 63 77 50 RSO 2 50 Butt Plate Screw 2 Req d B 64 11 50 RSO ea 50 Cleaning Tube J09300 All Models e 3 00 Cocking Piece KJ01800 All Models 8 00 Front Trigger Guard Screw J04705 All Models 50 Front Sight Assembly J26016 All Models 21 50 Ramrod Assembly J27105 All Models 16 50 Ramrod Support J08406 All Models 2150 Rear Mounting Screw J04800 All Mode
28. er can readily cause the gun to discharge Never cap the nipple until you are ready to shoot the rifle When capping be sure that the safety is in the load unload position After capping immediately place the safety in the full rearward safe position and keep it there until you are actually aiming at a target or game Only when you are immediately going to shoot should you move the safety fully forward to the fire position However the safety is a mechanical device and any mechanical device can fail Never depend upon this or any other mechanical device to justify careless handling of any firearm Keep the firearm pointed in a safe direction at all times NEVER PUT THE STRIKER DOWN ON A CAPPED NIPPLE When firing any rifle be sure all persons are a safe distance to the rear of the shooter When fired all muzzle loaders discharge gas and particles through the clearance gap between the striker and the rear of the nipple These particles of powder grains and percussion cap fragments are projected broadly sideways at high speed and can injure a person who is standing too close to the rifle When firing any muzzle loader always be certain that nothing including either of your hands is in the path of the hot gas and particles which are discharged from the top front and sides of the rifle Small pieces of the percussion cap are frequently blown away when a percussion arm fires Safety glasses must be used by sho
29. er or ball Reinsert the bolt Check rifle to ensure that A Nipple is uncapped B Barrel is empty C Bore and nipples are free of grease oil or other obstruction 2 CLEARING THE NIPPLES Without loading the barrel place a percussion cap on the nipple Point the rifle in a safe direction a few inches from some grass leaves or snow Move the safety to the full forward fire position and pull the trigger to fire the cap You should see the grass leaves or snow move from the force of the percussion cap Repeat this process with a second cap This is done to ensure that the nipple passage is clear and dry Open the bolt place the safety in the load unload position and remove the percussion cap and cap fragments 12 WARNING LOADING Know the bore diameter of your rifle you are loading and load projectiles of only correct diameter into it Either a too tight or too loose projectile can cause a burst barrel resulting in serious injury to the shooter or bystanders This rifle is designed to use a 500 projectile or a 490 projectile with a 010 015 thick patch 11 percussion cap and up to a maximum of 120 grains of FFg black powder or equivalent volume of Pyrodex RS only Never use smokeless powder of any kind Before firing be certain the percussion cap is seated completely on the nipple A rifle discharged by the closing of the bolt on an incorrectly seated cap can result in possible serious i
30. erial even partially obstructing the bore may result in damage to the rifle and serious injury to the shooter and those nearby Do not spray or apply lubricants directly on black powder If the powder charge is affected by the lubricant it may not be ignited but the energy from the percussion cap may be sufficient to push the bullet into the bore where it may become lodged Firing the obstructed bore may damage the rifle and cause serious injury or death to the shooter and those nearby In the event of a misfire always reseat the bullet fully onto the powder charge before re capping Use lubricants properly You are responsible for the proper care and maintenance of your firearm IMPROPER LUBRICATION DESTROYS GUNS The rifle s internal mechanism can be lubricated without disassembly A very few drops of light oil recommended as suitable for firearms applied periodically about the various frame openings will work its way into the mechanism parts The exterior of the rifle should be cleaned with a solvent and then wiped with an oily cloth Do not keep a rifle in a leather fabric or canvas case or scabbard when it is stored These materials attract moisture even though they may appear to be dry 12 Never store a loaded gun A WARNING STORAGE Never place or store any firearm in such a manner that it may be dislodged Firearms should always be stored securely and unloaded away from children and careless adults STORE SEC
31. faces like rocks or the surface of water and travel in unpredictable directions with considerable velocity LOADED 10 AVOID ALCOHOLIC BEVERAGES WHEN SHOOTING Don t drink until the day s shooting is over Handling firearms while under the influence of alcohol in any form or medications that could affect your judgment or co ordination constitutes a criminal disregard for the safety of others 9 NEVER TRANSPORT A LOADED FIREARM Firearms should always be unloaded before being placed in a vehicle A suitable carrying case or scabbard should be used to carry an unloaded firearm to and from the shooting area With muzzleloaders it s much easier and safer to fire them into a safe backstop before bringing them into car camp or home A BRIEF ACCOUNT OF AN EXTRAORDINARY ACHIEVEMENT RUGER FIREARMS One of the few American firearms manufacturers whose management has remained unchanged since starting in business Sturm Ruger amp Company Inc had its beginning in a small machine shop occupying a rented frame building in Southport Connecticut In January 1949 with an initial investment of only 50 000 and an idea William B Ruger and Alexander M Sturm started production of a 22 caliber autoloading pistol a design which was so successful that it became the cornerstone upon which one of the most comprehensive lines of sporting firearms ever made in America was established After Alex Sturm s death in 1951
32. front and back sides of the mount The lug is nearer to the front surface By reference to the lug the mounting ring can be correctly assembled with the front of the ring toward the muzzle of the rifle 1 Disassemble one ring and reassemble over the scope body between the turret and the eyepiece Remember the lug on the base should be on the front side of the scope 2 Install the four top screws Do not tighten 3 Disassemble the other ring and install it on the forward section of the scope tube with the lug forwardly also Install the four top screws Again do not tighten 4 Assemble the rings to the receiver with the lugs engaging the recesses in the top surface of the receiver Tighten the clamp nuts so that the rings are locked to the semicircular cuts on the sides of the receiver 5 Rotate the scope until cross hairs are aligned properly and slide scope to desired eye relief Then tighten the eight top screws each a bit at a time to grip the scope body 6 Sight in according to the directions with your scope 36 1 The bottom finish of a telescopic sight mounted over the action may be damaged by hot gasses and cap fragments exiting the breech area when firing This should not affect the scope s performance Carefully clean all scope lenses of fouling when you clean your rifle PLEASE NOTE THAT SOME STATES RESTRICT TELESCOPIC SIGHTS ON MUZZLELOADERS USED FOR HUNTING CHECK YOUR LOCAL GAME LAWS SIGHT ADJUSTMENT The
33. g telescopic sights or custom accessories with a firearm being shipped to the factory for service DO NOT SEND GUN BOXES OR LITERATURE THAT YOU CONSIDER TO BE COLLECTOR S ITEMS THESE ARE INVARIABLY DAMAGED OR DESTROYED IN SHIPMENT Rifles and shotguns may be shipped via Parcel Post Always insure your shipment Enclose a letter which includes your name address telephone number serial number and model of the firearm Describe in detail the trouble you have experienced with your firearm or the work you wish to have done Merely stating that the firearm needs repair is inadequate information Work performed will bear a net minimum labor charge of 15 00 plus a 5 00 shipping and handling charge The charge for rebluing the Model 77 50 rifle is 35 00 plus a 5 00 shipping and handling charge Custom gunsmithing service or non standard alterations are NOT AVAILABLE from Ruger Product Service Departments 38 WARNING PARTS PURCHASERS It is the purchaser s responsibility to be absolutely certain that any parts ordered from the factory are correctly fitted and installed Firearms are complicated mechanisms and IMPROPER FITTING OF PARTS MAY RESULT IN A DANGEROUS MALFUNCTION DAMAGE TO THE FIREARM AND SERIOUS INJURY TO THE SHOOTER AND OTHER PERSONS The purchaser and installer of parts must accept full responsibility for the correct adjustment and functioning of the firearm after such installation PARTS MUST FIT CORRECTLY O
34. haft KJ01308 All Models 1 25 Striker Spring J01205 All Models 50 Trigger KJ02000 All Models 10 50 Trigger Guard J00205 All Models 40 00 Trigger Pivot Pin D 19 All Models 50 Trigger Sear Spring J02400 All Models 50 PARTS SO MARKED MUST BE FACTORY FITTED t Contact the New Hampshire Service Dept for current price Be sure to have the complete serial number and model information before calling 603 863 3300 RUGER 77 50 PERCUSSION RIFLE EXPLODED VIEW KJO1307 S 100RH 1 gt ete Jo4900 2 dd 2 KJ01308 RS By 2 52 lt gt s 0 74 E J06100 79 Pus J08406 Ka C KJ01700 0J8012 E KJ06705 204600 0ASDY S i wu KJ02600 KJ01800 RD J06801 2 EN J04900 M J00110 E 9 s Y J05401 B69 gt B08600 J09300 em J09001 42 THE BASIC RULES OF SAFE FIREARMS HANDLING We believe that Americans have a right to purchase and use firearms for lawful purposes The private ownership of firearms in America is traditional but that ownership imposes the responsibility on the gun owner to use his firearms in a way which will ensure his own safety and that of others When firearms are used in a safe and responsible manner they are a great source of pleasure and satisfaction and represent a fundamental part of our personal liberty Firearms do not cause accidents Firearms accidents are almost always found to have been the result of carelessness or ignoran
35. ing the gun and forcing hot gas out of the nipple which can cause injury 9 PREPARING TO FIRE To normally fire the rifle the bolt must first be closed after the nipple is capped This is done by pushing the bolt handle fully forward and lowering it DO NOT TOUCH THE TRIGGER WHILE OPERATING THE BOLT KEEP THE SAFETY IN THE LOAD UNLOAD POSITION WHILE OPERATING THE BOLT AND MOVE IT FULLY REARWARD TO THE SAFE POSITION AS SOON AS THE BOLT IS CLOSED TOUCH THE TRIGGER ONLY WHEN YOU ARE READY TO FIRE AND HAVE DISENGAGED THE SAFETY WHILE AIMING AT A TARGET 6 FIRING Once the safety is pushed fully forward to the fire position the RUGER MODEL 77 50 is now ready to fire Light pressure on the trigger will cause the striker to fall forward striking the percussion cap and the rifle will fire Always be certain that you know where the bullet will strike when you fire the rifle Never allow the thumb to touch the cocking piece as it can be pinched when the striker moves forward during firing 16 STRIKER A WARNING HANDLING STRIKER UNCOCKED SAFETY ON CAP NOT VISIBLE CAP IS VISIBLE If this rifle is to be carried loaded certain precautions must be observed in the interest of safety It is safest to carry any muzzleloader with no percussion cap on the nipple The gun should never be carried with the striker resting on a percussion cap Under such circumstances a light accidental blow to the strik
36. into the barrel The rearmost projectile slamming into the other projectiles when fired could cause a burst barrel and severe personal injury Use only one bullet at a time SABOTS Some projectiles designed for muzzleloading rifles are considerably undersized from the bore diameter and are encircled by a resilient synthetic or fibre sabot or shoe An undersize sabot can easily release its projectile to become a bore obstruction or the sabot itself can act as a bore obstruction Never lubricate a sabot this can cause the saboted bullet to slip forward up the bore and act as an obstruction when fired possibly resulting in destruction of the rifle and severe injury to the shooter or bystanders If sabots are used their manufacturer s directions must be scrupulously followed PATCHING 490 diameter round ball projectiles of soft lead must be fired with a lubricated round linen cloth patch of 010 015 thickness about that of a gun cleaning patch and about 1 5 diameter However many shooters prefer to use lubricated soft lead conical projectiles and these often work best without a patch particularly if they are hollow based Always follow the instructions regarding patches that are furnished by the manufacturer of the projectile or bullet mold if you cast your own bullets that you chose The best lubricants for patches are vegetable based greases synthetic lubricants specifically designed for this use Petroleum based lubrica
37. it to the SAFE position Keep the safety in this position except when actually loading capping unloading or firing WARNING MANUAL SAFETY Keep the safety on unless actually firing Always move the safety fully to its intended position and check it The safety has three positions SAFE LOAD UNLOAD and FIRE Never depend on a safety mechanism or any other mechanical device to justify careless handling or permitting the rifle LOAD to point in an unsafe direction The only safe UNLOAD rifle is one in which the bolt is open the barrel is empty of both powder and projectile and the nipple is uncapped KNOW HOW TO USE THE SAFETY The safety selector is held in each of its positions by a plunger that is under spring tension Therefore the gun user should frequently check the position of the safety selector to be certain it has not been inadvertently moved If the safety does not function properly or if the selector seems to move too easily or if the safety selector does not seem firmly positioned in any of its three positions the rifle should be discontinued from use and returned to the Newport Product Service Department for repair See p 38 WARNING LEAD EXPOSURE Discharging firearms in poorly ventilated areas cleaning firearms or handling ammunition may result in exposure to lead and other substances known to the state of California to cause birth defects reproductive harm and o
38. k Powder is sold in bulk you are in complete control over how you load your rifle Be sure to weigh each charge or use a dipper which holds the exact weight of powder you wish to load Check to be sure the dipper holds the correct amount of powder by weighing a dipper full of powder before you begin loading your rifle from the dipper Never load powder into the barrel directly from a flask or other powder container you run the serious risk of explosion and severe personal injury A good starting accuracy load using a pure lead 50 diameter ball or conical projectile is 40 grains of FFg black powder You may find that adjustment of this charge upward or downward is more accurate in your rifle good starting hunting load for deer sized game with the same projectile is 70 grains of FFg black powder Consulting a black powder loading manual for recommended target or hunting loads is essential Never exceed the maximum powder charge listed for the specific projectile you are using Never exceed a powder charge of 120 grains of FFg black powder regardless of the projectile you are using WARNING AMMUNITION Death serious injury and damage can result from the use of wrong ammunition bore obstructions powder overloads or incorrect A components Always wear povar HON MRO DN shooting glasses and hearing or Smokless Powder POWDER protectors Never use smokeless powder in any muzzleloader Never fire an unknown powder charge
39. l be unable to use the breech plug wrench to remove the breech plug until you reassemble the bolt ROTATE BOLT SLEEVE INSERT PIN c Unscrew the bolt sleeve counterclockwise Figure 20 UNSCREW BOLT SLEEVE d Remove the bolt sleeve assembly Figure 21 REMOVE BOLT SLEEVE STRIKER ASSEMBLY CAUTION The bolt sleeve assembly is intended to be a permanent assembly and should not be disassembled The parts are under great spring pressure and if disassembled could fly apart with sufficient force to cause serious injury Also special tools are required to correctly reassemble this part 24 5 REMOVE THE BREECH PLUG UNSCREW BREECH PLUG COUNTERCLOCKWISE BREECH PLUG WRENCH 22a UNSCREW BREECH PLUG a Using the supplied breech plug wrench and handle carefully unscrew counter clockwise and remove the breech plug nipple assembly from the rear end of the barrel See Figures 22a amp 22b It is easier to remove the breech plug from the receiver if you keep it in the BREECH breech plug wrench as shown PLUG REMOVE BREECH PLUG 25 6 TO REMOVE THE STOCK Be certain the bolt has been removed from the rifle a Remove ramrod from stock Unscrew barrel band screw and remove barrel band forward off the stock and barrel See Fig 23 jin a REMOVE ROD c REMOVE BAND UNSCREW BAND REMOVE RAMROD AND BARREL BAND b Unscrew and remove the two screws in the
40. ll parts including bolt barrel receiver trigger etc to be sure that these are clean and dry Pay particular attention to the breech plug threads inside the barrel 10 Oil the bore and all parts thoroughly with a good quality gun oil then re assemble However avoid lubricating the striker striker spring or the inside of the bolt to avoid oil spattering when firing or sluggish ignition in cold weather Remember to lubricate the breech plug nipple assembly threads with a good quality black powder gun grease prior to reassembly See page 30 11 The outside exposed metal parts should be wiped down and lightly oiled to remove fouling and prevent rusting NOTE Several firms offer Black Powder solvents and these may be used in place of the soap and hot water solution However not all smokeless powder solvents will render the fouling left by Black Powder non corrosive Be sure you use a solvent specifically intended for black powder fouling hot soapy water or an ammonia based window cleaner followed by a good gun oil Sometimes lead build up can occur in the barrel throat at the muzzle of the barrel and in the bore If leading is noted in your rifle clean it out before it builds up and interferes with reliable functioning and accuracy A special lead removing cleaning tool for bore and chamber is available from gun stores WARNING LUBRICATION Firing a rifle with oil grease a bullet or any other mat
41. ls 50 Rear Sight J06100 All Models 13 00 Lt Receiver J00110 All Models Not Offered For Sale Receiver Filler Screws 2 Req d Not Illustrated C 83Black 77 50 RS 77 50 RSO 50 Receiver Filler Screws 2 Req d Not Illustrated C 83 K77 50 RSBBZ ea 50 Recoil Pad D06304 77 50 RS K77 50 RSBBZ 5 00 Recoil Pad Screw 2 Req d D 84 11 50 RS K77 50 RSBBZ ea 50 Safety Selector J03800 77 50 RS 77 50 RSO 8 50 Safety Selector KJ03800 K77 50 RSBBZ 9 00 Safety Selector Detent J04300 All Models 50 Safety Selector Detent Spring D 32 Models 50 Safety Selector Retainer J02100 11 50 RS 77 50 RSO 1 50 Safety Selector Retainer KJ02100 K77 50 RSBBZ 2 00 Scope Ring Clamp D 74 All Models 2 00 Scope Ring Nut D 73 All Models 2 00 Scope Ring Screws 8 Req d D 76 All Models ea 50 Scope Rings Medium Rings S 100RH All Models 40 60 45 40 Accommodates a 42mm Lens Sear KJ02303 All Models D29 Sear Pivot Pin J04201 All Models 250 Sling Swivel Adaptor Front B08600 All Models 3 00 Sling Swivel Rear Mounting Stud S 87 All Models NET Stock Birch Complete J20441 77 50 RS 145 25 t Stock Black Laminated Complete J20442 K77 50 RSBBZ t Stock Walnut Complete J20440 77 50 RSO Striker Cross Pin J04900 All Models 50 Striker Head KJ01307 All Models 1 50 Striker S
42. nipple You should see light through the hole in the nipple indicating that the barrel is empty Keep the muzzle pointed in a safe direction and keep your fingers off the trigger throughout the assembly and loading process until you are actually ready to fire See Rule 2 p 43 2 Position the safety selector in the Load Unload position see Figure 3 p 6 3 Make certain the bolt is correctly assembled and ready to be inserted in the receiver If there is any doubt see numbered paragraph 6 p 33 To Assemble the Bolt in the Reassembly section of this manual 4 Note that if the breech plug is not screwed all the way into the receiver the bolt cannot be fully closed Whenever you install the breech plug be sure that you coat its threads with grease in order to be able to remove it for cleaning See p 31 5 Depress the bolt stop and insert the bolt into the receiver LOADING WARNING Please re read carefully the paragraph entitled Warning Black Powder p 9 In the interests of both performance and safety it is important that steps which follow be performed in sequence and with attention to detail 1 BEFORE LOADING Lift the bolt handle and place the safety in the load unload position Remove the bolt by pressing down on the bolt stop and withdrawing the bolt to the rear Look through the hole in the nipple with the barrel pointed toward a light source to make sure the barrel is empty of powd
43. njury to the shooter and those nearby If a projectile does not fully seat readily do not force it Check to be certain that each projectile is the proper caliber and of correct dimensions If you cannot determine why the projectile will not fit carefully remove the projectile empty the rifle of all powder see pp 20 22 and write or call the factory The wrong components or an excessive powder charge can destroy your gun and result in serious injury to you or bystanders BE SURE WHAT YOU LOAD IS CORRECT 3 CHARGING THE BARREL A Starting with the bolt open in its full rearward position place safety in the load unload position See Fig 5 Do not touch the trigger NIPPLE UNCAPPED while loading Be sure that no cap 3 gt ONO is on the nipple nom B With one hand hold the rifle securely with the barrel pointing straight upwards and the recoil pad or butt plate on the ground D UNI Keep your face and other body POSITION parts away from the muzzle LOADING POSITION 13 C E Using a dipper or other single charge measure pour the desired amount of powder into the front opening muzzle of the barrel See Fig 6 Never exceed the BLACK POWDER OR PYRODEX powder charge recommended for the projectile you have selected from a reputable black powder loading manual Do not pour powder directly from the flask or other powder container See Black Powder Warning p 9
44. nts often char the patches when fired and may leave excess residue in the bore don t use them to lubricate patches for bullets PERCUSSION CAPS A percussion cap is a small metal cup the interior top of which is coated with a priming mixture This priming mixture is usually covered with a foil or paper liner It fires when struck a blow The cap is placed on the nipple and when struck by the striker the priming compound explodes igniting the powder charge The cap should fit the nipple only tightly enough so that it does not fall off when the barrel is elevated with the bolt open Do not attempt to use caps which are too tight or try to force or pound caps onto the nipples as a premature discharge could result Suggested cap size for the RUGER MODEL 77 50 rifle is No 11 U S or equivalent Since percussion caps have an open end which is placed on the cylinder nipple when you are ready to fire they are susceptible to contamination Be careful when handling percussion caps especially with oily fingers and try to keep water grease dirt and other contaminants out of the open end of the caps Failure to do so is the main cause of misfires in percussion muzzleloading firearms 10 AX WARNING PERCUSSION CAPS Percussion caps are designed to fire as the result of a blow percussion A capped rifle loaded with powder and ball is fully loaded and will fire if the cap is struck Never clean l
45. od quality black powder gun grease See Figure 27 Do not lubricate the back or nipple portions of the breech plug Failure to lubricate it will make this part extremely difficult to remove THREADS ALWAYS LUBRICATE BREECH PLUG b Using the supplied breech plug wrench insert and tighten the breech plug nipple assembly into the threaded rear end of the barrel See Figure 28 Do not over tighten firmly snug will do It will tighten during firing TIGHTEN BREECH PLUG CLOCKWISE 28 REPLACING THE BREECH PLUG 31 5 To replace the barrel receiver assembly into the stock Caution Be certain that the pivot pins are not protruding from either side of the receiver a Carefully install the barrel receiver assembly into the stock making sure the barrel receiver assembly is in the most rearward position See Figure 29 29 INSERT BARRELLED ACTION INTO STOCK b Install the trigger guard and screws shorter screw in front See Figure 30 SHORT SCREW eb 9 IN FRONT REINSTALL TRIGGER GUARD 32 c Slide barrel band over barrel and rearward onto the stock forend Tighten band screw when in place Replace ramrod in stock through thimble under barrel See Figures 31a 31b amp 31c Ramrod head REINSTALL BAND should rest in barrel cut beneath muzzle Ramrod will not enter stock easily if band screw is tightened excessively SCREW CLOCKWISE TIGHTEN BARREL BAND SCREW
46. om the rear of the bolt sleeve revealing the disassembly hole in the lower portion of the cocked piece The bolt stop on the left side of the receiver permits the bolt to be withdrawn simply by pressing down lightly with the thumbnail The safety selector show in the Safe position should be in the Load Unload position when the bolt is being removed or being installed OPERATION OF SAFETY The RUGER MODEL 77 50 rifle has a three position safety The safety selector is located at the right of the bolt sleeve The safety selector can be moved from the Fire position to its two other positions Load Unload and Safe only when the striker is cocked Fully raising the bolt handle cocks the striker The bolt handle can be raised and lowered only when the safety selector is in either the full forward Fire or the middle Load Unload position When the safety selector is in the full rearward Safe position the bolt handle is locked in the closed fully down position in order to prevent inadvertent lifting of the bolt handle and to ensure that the rifle will be ready to fire when the safety is taken off Practice with an unloaded rifle moving the safety selector to the three positions until you know the position of the safety selector for the three modes Fire Load Unload and Safe WARNING When manipulating the safety selector DO NOT HAVE ANY FINGER INSIDE THE TRIGGER GUARD When the safety select
47. om your dealer ready to use or can easily be cast at home with a small investment in equipment Information on bullet casting is available from the manufacturers of moulds and casting equipment and from various authoritative handbooks Your dealer should be able to provide you with any equipment which you may require See Lead Exposure Warning p 7 The Ruger Model 77 50 s rifling twist 1 turn in 28 is designed for best results with pre lubricated soft lead conical projectiles or jacketed or soft lead bullets encased in sabots See p 10 Patched round balls generally do not deliver as high a level of accuracy with this rifling twist but may be safely used if correctly loaded See p 14 The use of non saboted jacketed or alloy bullets is not recommended as accuracy is generally not as satisfactory as with the pure lead bullets They may be difficult to load and may raise pressures to dangerous levels Whatever projectile you select you must remember that if it is not a tight fit in the barrel when loaded it could shift forward off the powder charge and act as a bore obstruction causing the barrel to bulge or burst when fired It is your responsibility to select the proper lead ball patch combination of a lubricated conical lead bullet that fits securely in the bore yet is not excessively difficult to load particularly after a shot or two of black powder fouling has built up in the bore Never load multiple projectiles
48. or is in the Fire position and the trigger is pulled the rifle will fire The safety selector should always be in the Safe position except when the gun user is actually firing or unloading the rifle The safety selector should unfailingly be moved to the Safe position whenever the gun user ceases firing SAFETY POSITIONS Figure 2 Safety selector in FIRE full forward position The safety selector should be moved to this position only when the gun user is actually firing the rifle When the safety is in the fire position it is referred to as being off When the safety is in the SAFE position shown in Figure 4 it is referred to as being on Figure 3 Safety selector in LOAD UNLOAD middle position The safety selector should be in this position when the bolt is being cycled to place a percussion cap on the nipple to remove a percussion cap from the nipple or when unloading the rifle As soon as the bolt is closed the safety selector should be moved fully rearward to the SAFE position shown in Figure 4 unless the rifle is to be fired immediately Figure 4 Safety selector in SAFE full rearward position The safety selector is fully nested in the groove in the cocking piece When the safety selector is in this position the bolt handle cannot be raised The curved arrow on the bolt sleeve indicates the direction and motion of the safety selector to bring
49. oters and bystanders when loading and firing any percussion firearm Always wear hearing protection when firing any firearm in order to avoid permanent hearing damage HOT GASES EXIT NIPPLE AREA Remember Never lower the striker fully down onto a percussion cap or loaded rifle See Handling Warning p 17 THE SAFETY SELECTOR IS IN THE FIRE POSITION WHEN YOU OPEN THE BOLT MOVE THE SAFETY SELECTOR TO THE LOAD UNLOAD POSITION BEFORE CLOSING THE ACTION ONCE THE ACTION IS CLOSED MOVE THE SAFETY FULLY BACK TO THE SAFE POSITION WARNING RELOADING Black powder is extremely sensitive and a powder charge poured down the barrel after firing a shot can readily be ignited by an ember of partially burned powder or glowing patch fragment in the bore Pushing a projectile down onto a powder charge can fan an ember into igniting the powder charge and firing the rifle T WARNING REMEMBER THAT EACH TIME A SHOT IS FIRED Always wait one minute before reloading You should wipe the bore with a cleaning patch soaked in solvent between shots If a cap fires but the powder charge does not the powder may be smoldering and could ignite at any time Wait at least one minute before attempting to recap Remember that hot gasses can escape from the nipple if the powder charge ignites when the bolt is open and these gasses can burn you Keep the rifle pointed in a safe direction at all times Keep your head f
50. per capping of the nipple a dirty receiver cap fragments or a breech plug not properly screwed fully into the barrel Whatever the cause the gun user must above all recognize that jams can result in the very potentially dangerous situation of a percussion cap discharging the powder charge before the bolt is closed If this occurs cap fragments and hot gasses will fly out of the gun with sufficient force to cause injury Always wear shooting glasses and hearing protectors STRIKING PERCUSSION CAP WILL FIRE THE RIFLE TO CLEAR A MALFUNCTION JAM If the rifle becomes difficult to operate this can usually be traced to three basic causes followed by the appropriate corrective action 1 Accumulated black powder fouling cease firing amp clean gun 2 Percussion cap fragments inside receiver carefully remove 3 Percussion caps not fully seated on nipples carefully reseat Be sure you are using the correct size cap 11 If it becomes necessary to disassemble the rifle to clear a jam be sure to unload it first Never work on any gun with a percussion cap on the nipple 35 MAINTENANCE OF STAINLESS STEEL COMPONENTS Firearms and components made of stainless steel are relatively more resistant to corrosion than those of blued steel However in the interest of proper operation and long life of a stainless steel firearm inspect it frequently and clean lubricate and apply an appropriate rust preventative
51. r is under spring tension from a spring and plunger acting against the lower section of the safety selector The spring and plunger will jump out if not contained c Liftout the safety selector d Remove the safety selector detent and safety selector detent spring See page 30 for Reassembly instructions CARE AND CLEANING WARNING ALWAYS BE CERTAIN THE RIFLE IS COMPLETELY UNLOADED BEFORE CLEANING REMOVE CAP POWDER AND PROJECTILE BLACK POWDER FOULING The chemical compounds formed by Black Powder and Pyrodex residue and certain percussion caps are extremely corrosive rusting will begin within a very few hours after firing if the rifle is left uncleaned under some conditions of humidity Fouling will also slow down or bind up moving parts possibly resulting in misfires failure to fire and hangfires firing delayed up to a few seconds It is therefore important that yur RUGER MODEL 77 50 be cleaned thoroughly and without delay after each use Furthermore Black Powder fouling promptly hardens with the passage of time making disassembly difficult and this fouling is extremely corrosive even to stainless steel A firearm must be free of rust dirt grease and firing residues to function safely and reliably Periodic maintenance which includes inspection of components to determine if they are in proper working order is absolutely essential 27 Firing deposits particles of bullet lubricant and powder in
52. reech plug wrench handle 26 ith ft mallet to the breech with a soft mallet to loosen the breec INSERTING plug especially after repeated firing CLEANING TUBE Screw in cleaning tube to prevent cleaning solution from entering receiver and stock of rifle See Figure 26 5 With muzzle pointed down so that water cannot enter the trigger mechanism flush the barrel with warm water until water runs clear from the muzzle A cleaning patch wetted with hot soapy water or an ammonia based window cleaner will also work 6 Using a bristle or brass brush wetted with soap and water solution thoroughly scrub bore to remove all traces of fouling Then flush bore again with very hot water Do not permit water to enter the trigger mechanism Remove cleaning tube and carefully scrub receiver breech plug threads clean Clean the trigger mechanism thoroughly with a brush wetted with a commercial black powder solvent Dry bore and receiver assembly thoroughly with clean cloth and set aside 28 7 Thoroughly scrub bolt component parts in pan flush with very hot water or ammonia based window cleaner rinse and then wipe dry Scrub the front of the bolt face with a toothbrush to remove all traces of powder and cap fouling 8 Soak the breech plug in very hot soapy water or an ammonia based window cleaner Scrub its threads with a toothbrush Thoroughly dry the breech plug making sure the flash hole through the nipple is clean and dry 9 Inspect a
53. sist you The person with a gun in their possession has a full time job You cannot guess you cannot forget You must know how to use your firearm safely Do not use any firearm without having a complete understanding of its particular characteristics and safe use Remember There is no such thing as a foolproof gun TABLE OF CONTENTS Page General Information 3 Operation of Safety iu costae be UR ood bebo kac RR ACE ed E 6 Ammunition cc ce ce eee ee ee ee s 7 Eye and Ear Protection 0 0 0 cc ccc cc ce ee RR RR Ree 11 To Load and Fire oe ac ox ol ERO Rc 11 MEET 20 Basic Disassembly and Reassembly 22 Care and Cleaning esser ons RC o OV TEC o Rn 24 Regarding Accuracy 34 To Clear a Malfunction Jam 35 Maintenance of Stainless Steel Components 36 Attaching Scope 36 Sight Adjustment a5 cora eee hd ee accede 37 Service and Parts Policy RENE EIN NEEN 38 Paris 42 The Basic Rules of Safe Firearms Handling 43 Warranty Information eee RR RR 48 Ruger is a registered U S trademark 77 50 is a trademark of Sturm Ruger amp Co Inc 2 WARNINGS OF
54. sively difficult to push down the barrel you may not fully seat it on the powder charge and it may act as a bore obstruction resulting in a burst barrel and possible serious injury to the shooter or bystanders Instead open the bolt pull the projectile out of the muzzle empty out all powder and clean the barrel thoroughly before reloading DRY FIRING Going through the actions of cocking aiming and pulling the trigger of an unloaded gun is known as Dry Firing The Ruger Model 77 50 should not be dry fired as damage to the nipple may occur which can prevent the flame from the cap from fitting on the nipple correctly or can prevent the cap flame from igniting the powder charge AX WARNING MISHANDLING Never carry the rifle loaded with the safety selector in the FIRE position If dropped or struck with the safety off the rifle may fire Such a discharge can occur with or without the trigger being directly struck or touched Never rest a loaded rifle against any object wall fence vehicle tree etc because there is always the possibility that the rifle will be jarred or slide from its position and fall with sufficient force to discharge Keep safety on unless actually firing Never lower uncock the striker onto a percussion cap of a loaded rifle Under such circumstances the striker will be in direct contact with the percussion cap and a light accidental blow to the striker can readily cause the gun to disch
55. ssembled run the ramrod fully into the barrel and note how much of it protrudes from the muzzle If any more of the ramrod ever protrudes from the muzzle at any time you run the ramrod fully into the barrel you must assume that the rifle is loaded be careful BASIC DISASSEMBLY AND REASSEMBLY The user of a RUGER 77 50 should carefully read all disassembly directions and study all the illustrations and the Parts List in this manual before attempting to take the gun apart Know the names and location of the parts before removing any of them Although the rifle mechanism is composed of only a few parts it is essential that the disassembly and reassembly operations be carried out with knowledge and care Only few tools are required screwdriver or two to remove the trigger guard screws and to remove the barrel band screw and the supplied breech plug wrench to unscrew the breech plug The tip of the screwdriver blade should perfectly fit the screw slots A tip too large will scrape away metal while too small a tip will damage the screw slots AX WARNING DISASSEMBLY Never clean lubricate disassemble or work on rifle while it 15 loaded or capped Never install or remove LOADED a capped nipple capped nipple can discharge the rifle if struck Always unload any firearm before cleaning lubrication disassembly d w or assembly Read instructions before disassembling gun UNLOAD BEFORE CLEANING OR DISASSEMBLING
56. ther serious physical injury Have adequate ventilation at all times Wash hands thoroughly after exposure SHOOTING OR CLEANING GUNS MAY EXPOSE YOU TO LEAD AMMUNITION BLACK POWDER OR PYRODEX ONLY The RUGER MODEL 77 50 is single shot muzzleloading percussion rifle intended solely for use with Black Powder or Pyrodex It should never under any circumstances be loaded with any type of smokeless powder as the result could be damage to the rifle and injury to the shooter or bystanders Be aware that certain smokeless powders may appear black in color even though they are not Black Powder Never use any powder that you are not certain is actually Black Powder The best way to do this is to only use powder from clearly marked original cans of Black Powder or Pyrodex 7 Black Powder is usually classified by powder grain size with Fs being the largest granulation and FFFFg being the smallest granulation normally available Use only FFs sometimes called 2F grain size black powder in the RUGER MODEL 77 50 rifle Replica Black Powder such as Pyrodex RS may be used so long as suggested loading data is strictly adhered to Note that Pyrodex RS is less dense than FFg black powder and must only be used as a measure for measure substitute for FFg black powder If you substitute Pyrodex RS for FFg black powder on a weight for weight basis you will overcharge your rifle and risk serious injury POWDER CHARGE Since Blac
57. ubricate disassemble or work ona rifle while it is capped or loaded Never install remove or carry a capped nipple or breech plug Always remove the percussion cap before unloading the barrel or disassembling the rifle NEVER STRIKE A PERCUSSION CAP EYE AND EAR PROTECTION Safety glasses must be used when loading and firing the RUGER MODEL 44 30 any percussion firearm In percussion muzzleloaders unlike cartridge firearms the thin percussion cap is the only seal against the hot gasses of main powder charge which can escape out of the nipple with great force when the rifle is fired Small pieces of the percussion cap are frequently blown away to the side or rear when a percussion arm fires Always wear hearing protection when firing any firearm in order to avoid permanent hearing damage TO LOAD AND FIRE Practice this important aspect of gun handling with an unloaded rifle until you can perform each of the steps described below with skill and confidence But before loading the rifle please read completely through this manual and be certain the muzzle is pointing in a safe direction Do not load the rifle until you are ready to use it The following procedure assumes a new rifle with the bolt out 11 INSERTING THE BOLT l Becertain the barrel is empty by pointing the muzzle upward towards a light source and glancing through the rear of the action at the rear end of the
58. uite right CEASE FIRING IMMEDIATELY and check to be sure that no obstruction has become lodged in the barrel Never try to shoot out an obstruction LOADED a NJ 44 5 BESURE OF YOUR TARGET BEFORE YOU SHOOT Don t shoot unless you know exactly where your bullet is going to strike Be sure of the bullet stop behind your target even when dry firing with an unloaded gun If you are in the field hunting do not fire at a movement or noise Take the time to be absolutely certain of your target before you pull the trigger 6 WEAR SHOOTING GLASSES AND HEARING PROTECTORS WHEN YOU SHOOT All shooters should wear protective shooting glasses and adequate hearing protectors when shooting Exposure to shooting noise can damage hearing and adequate eye protection when shooting is essential Bits of metal percussion cap and hot powder gasses are ejected in many directions when firing any percussion muzzleloader 7 NEVER CLIMB A TREE OR FENCE WITH A LOADED FIREARM Put the firearm down carefully before climbing a fence and remove the cap or unload it before climbing or descending a tree or jumping over a ditch or other obstruction Never pull or push a loaded firearm toward yourself or another person When in doubt or whenever you are about to do anything awkward remove the cap or unload your gun 45 8 DON T SHOOT AT A HARD SURFACE OR AT WATER Bullets can glance off many sur
59. ver See Fig 14 REMOVE BOLT 20 5 Using the breech plug wrench supplied carefully unscrew the breech plug from the chamber Keep it in the breech plug wrench and remove it out the rear of the receiver See Figs 15a amp 15b UNSCREW BREECH PLUG COUNTERCLOCKWISE 6 Carefully elevate the muzzle and dump the UNSCREW BREECH PLUG powder out of the rear of the barrel into a container See Fig 16 1 Place some lubricating oil into the barrel Now place the ramrod into the muzzle of the barrel taking care not to damage it Gently tap the end of the rod until the ball comes out the rear of the barrel and receiver See Fig 17 REMOVE BREECH PLUG REMOVE POWDER REMOVE POWDER REMOVE PROJECTILE TAP OUT PROJECTILE 21 8 Reinsert the breech plug using the wrench 9 Inspect the chamber to be certain the bore is completely empty of powder and ball and that no cap or priming compound remains on the nipple 10 Reinsert the bolt 1 OA Move the safety selector to the Fire position and with the rifle pointed in a safe direction pull the trigger as you close the bolt and ease the bolt handle downward This uncocks the striker Firing is not advisable in the RUGER 77 50 due to possible nipple damage Never uncock the striker onto a percussion cap See Handling Warning p 17 12 Once you know the rifle is completely unloaded and rea

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