Ruger Hunting Equipment User Manual

Page 21

To reassemble firing pin assembly into bolt:
Screw the assembly fully into the bolt. The assembly is properly positioned in
the bolt when the flat on the bottom right side of the bolt sleeve (front of bolt
facing you) is aligned with the flat on the bottom end of the bolt handle. Note:
There is a shallow notch on the rear end of the bolt body – at the end of the
cam cut – into which the nose of the cocking piece ‘fits.’ When the firing pin
assembly is being turned into the bolt body, it may be necessary to use the
restraining pin as a lever to slightly retract the cocking piece nose so it can be
moved into the notch. When the firing pin assembly is correctly positioned in
the bolt body, the restraining pin can be removed, but not before!

To replace bolt:
a. With bolt handle in an upward position and bolt head away from you, align
the extractor with the right hand locking lug in the right-handed version or
the left locking lug in the left-handed version. Align the locking lugs with the
channels in each side of the rear of the receiver and partially insert the bolt.
b. Push the bolt fully forward.

REGARDING ACCURACY: The accuracy of any rifle can vary depending upon the
make and type of cartridges used in it. Such being the case, if your RUGER

M77

MARK II rifle does not perform to expectations, it is advisable to try

several brands and types of cartridges 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:

1. Be certain the two trigger guard screws and the floorplate hinge screw are

snugly tightened as described in Step 4, p. 21, of the “Reassembly” section of
this manual.

2. Be certain the bore is clean and free from accumulated metal fouling

(deposited by metal jacketed and lead bullets). See the “Care and Cleaning”
section of this manual.

3. Check the sights for tightness, setting and alignment.

If everything is 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 in Newport, New Hampshire 03773 and describe the nature of the
problem based on the use of factory-loaded cartridges – not reloads. You will
receive a prompt response from us and if indicated, detailed instructions with
regard to the return of the rifle.