Ruger 77/50 Instruction Manual

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 & 15b)
6.Carefullyelevate the
muzzle and dump the
powder out of the rear of
the barrel into a container.
(See Fig. 16)
7. 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...

Never clean, lubricate, disassemble
or work on a rifle while it is loaded
or capped.Never install or remove
a capped nipple. A capped nipple
can discharge the rifle if struck.
Always unload any firearm before
cleaning, lubrication, disassembly,
or assembly. Read instructions
before disassembling gun.
UNLOAD BEFORE CLEANING
OR DISASSEMBLING
22
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...

23
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...

c. Unscrew the bolt sleeve
counterclockwise (Figure 20).
d. Remove the bolt
sleeve assembly. (Figure
21).
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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...

25
5.TO REMOVE THE 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 & 22b)
It is easier to remove the breech plug
from the receiver if you keep it in the
breech plug wrench as shown.
AUNSCREW BREECH PLUG
COUNTERCLOCKWISE
BREECH PLUG WRENCH
22a
REMOVE
BREECH
PLUG
B
22b
UNSCREW BREECH PLUG 
REMOVE BREECH PLUG 

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)
b. Unscrew and remove the two screws in the 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.
c. VERY...

27
CARE AND CLEANING
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 your RUGER
®MODEL 77/50be
cleaned...

Firing deposits particles of bullet lubricant and powder in 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...

Firing a rifle with oil, grease, a bullet, or any
other material 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...

30
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 SECURELY & UNLOADED
!WARNING–STORAGE
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...