Ruger 10/22 Magnum Instruction Manual

For Product Service on This Model Please Call:
(603) 865-2442 (See p. 24)
STURM, RUGER & Company, Inc.
Southport, Connecticut 06490 U.S.A.
THIS INSTRUCTION MANUAL SHOULD ALWAYS ACCOMPANY THIS FIREARM AND BE TRANS-
FERRED WITH IT UPON CHANGE OF OWNERSHIP, OR WHEN THE FIREARM IS LOANED OR PRE-
SENTED TO ANOTHER PERSON.
B-M 10/99 R1
READ THE INSTRUCTIONS AND
WARNINGS IN THIS MANUAL CAREFULLY
BEFORE USING THIS FIREARM
!
BLUED
STEEL
D
ONOTUSETHISMANUAL FORRUGER10/22 CARBINES IN CALIBER.22 LONGRIFLE
CALIBER...

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 10/22®MAGNUMproperly. Please contact us
if you have any questions about it.
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...

NOTE:The following warning applies to RUGER®MODEL 10/22
MAGNUM riflesonly
:
3
!WARNING – LOCKING DEVICES
DO NOT INSTALL
INSIDE TRIGGER GUARD
INSTALL LOCK
AS SHOWN HEREThis firearm was originally sold
with a key-operated locking
device. While it can help provide
secure storage for your unloaded
firearm, any locking device can
fail. All guns are designed to fire if
they are loaded and the trigger is
pulled. Therefore, never install the
locking device inside the trigger
guard or in any way that it can...

!
4
!
FIREARMS ARE DANGEROUS WEAPONS–
READ THE INSTRUCTIONS AND WARNINGS
IN THIS MANUAL THOROUGHLY AND
CAREFULLY BEFORE USING.
GENERAL INFORMATION
AND MECHANICAL CHARACTERISTICS
The RUGER®MODEL 10/22®MAGNUM differs from the RUGER®
MODEL 10/22®CARBINEin caliber .22 long rifle in the following partic-
ulars:
●Ammunition-It is chambered for the larger and more powerful .22
Winchester Magnum Rimfire (.22 WMR) cartridge only
;
●Magazine-It uses a larger 9-shot magazine, first introduced in the
Ruger 77/22...

●Integral Scope-Unlike the screw-on aluminum “tip-off” scope mount 
Mount Bases
base furnished with standard Ruger 10/22 rifles, the 
Ruger 10/22 Magnum features steel scope bases 
integral to the receiver, which accept the patented 
Ruger scope rings (furnished at no extra charge).
●Bolt-The Ruger 10/22 Magnum bolt is manufactured from
a dense tungsten alloy, in order to give the bolt ade-
quate mass required to function correctly with the
more powerful .22 Winchester Magnum Rimfire car-
tridge.
The...

6
OPERATION OF SAFETY
The RUGER®MODEL 10/22®MAGNUM has a cross-button safety which
is located in the forward portion of the trigger guard (Figure 1). The safety can be
operated only when the hammer is cocked.
The safety is “on” when it protrudes fully from the right side (the bolt handle
side) of the trigger guard assembly, as shown in Figure 1. In this position the
sear is blocked, and the gun cannot be fired from a normal pull on the trigger.
The safety should always be in the “on” (safe) position...

7
The safety is “off” (fire) when it protrudes from the left side of the trigger guard
assembly, as shown in Figure 2. When the safety is off, the red band shows on the
safety button, but do not totally rely on the appearance of the red band to indi-
cate that the safety is off. In poor light or if dirt is present, the red band may not
be visible. If the safety is “off” and the trigger is pulled, the rifle will fire.
Figure 2.The underside of the trigger guard section of the rifle. In this illustration...

8
THE BOLT LOCK
The bolt lock is located in the forward section of the trigger guard (see Figure 1,
p. 6). The bolt lock is the manually operated means of retaining the bolt in the
rearward (open) position. When the bolt is locked open, the rifle is in an inopera-
tive safe condition for inspection of the chamber, cleaning, etc.
To lock the bolt open:Retract the bolt handle to its extreme rearward position
and, while holding it there, press in on the lower
section of the bolt lock. Release
pressure on...

Use only standard Winchester
Magnum Rimfire (.22WMR)
ammunition loaded to U.S.
Industry specifications. Do not
fire .22 short, long, or long rifle
cartridges in this rifle or load
them into the magazine - they
are of smaller case diameter and
otherwise vary in size from the
larger .22WMR cartridge. They
can split or burst when fired in
the larger magnum chamber,
releasing hot powder gasses and
particle fragments out of the
action at high speed, possibly
resulting in injury to the shooter
or bystanders....

10
MAGAZINE
The 9-shot .22WMR magazine for the Ruger Model 10/22 Magnum is longer than
the 10-shot .22 long rifle magazine for standard Ruger 10/22 carbines. Do not
attempt to use standard 10/22 magazines in the 10/22 Magnum rifle or load .22
short, long, or long rifle ammunition into the .22 magnum magazine. They will not
function correctly and are unsafe to use in .22 Magnum rifles (see “.22 Magnum
Ammunition Warning”, p. 9).
Ruger Model 10/22 Magnum
Magazine
(correct)Ruger Model 10/22 Long Rifle...