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
.22 WINCHESTER
MAGNUM RIMFIRE
INSTRUCTION 
MANUAL
FOR
RUGER®
MODEL 10/22®MAGNUM
SPECIAL INSTRUCTIONS FOR THE
RUGER
®10/22 MAGNUM ONLY   
						

							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 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 assist you.
The person possessing a gun 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  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 & 5 
Operation of Safety  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
The Bolt Lock  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Ammunition  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Magazine  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Loading the Magazine  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
To Load and Fire (With Magazine)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
To Load and Fire (Without Magazine)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
To Unload Rifle and Magazine  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
To Extract and Eject a Chambered Cartridge  . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
To Clear a Malfunction (“Jam”)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
To Minimize Malfunctions (“Jams”)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
To Disassemble  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Reassembly  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Magazine Inspection and Care  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Care and Cleaning  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Attaching Ruger Scope Rings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Sight Adjustment  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Service and Parts Policy  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Parts Drawing  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 & 30 
The Basic Rules of Safe Firearms Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Warranty Information  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
“RUGER” and “10/22”, are registered U.S. trademarks.
2 
						

							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
possibly pull the trigger!Do not
leave the keys in the lock.
The ultimate responsibility for
secure storage of any firearm
must depend upon its owner and
his or her individual circum-
stances. Guns should be securely
stored unloaded, in a secure loca-
tion, separate from their ammuni-
tion.
See “Storage Warning”, page 22.
NEVER INSTALL
LOCKING DEVICE
INSIDE TRIGGER GUARD 
						

							!
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 magnum rifle, to handle this longer car-
tridge;
●Receiver-It uses a special longer chrome-molybdenum steel
receiver, which also incorporates -
WARNING–ALTERATIONS
This product was designed to func-
tion properly in its original condi-
tion. Alterations can make it unsafe.
Do not alter any part or add or sub-
stitute parts or accessories not made
by Sturm, Ruger & Co. Inc.
DO NOT ALTER ANY GUN
WARNINGS OF GREAT IMPORTANCE ARE
FOUND ON THE FOLLOWING PAGES:
Locking Devices 3 Handling 14
Alterations 4 Unloading 14
Manual Safety 7 Malfunctions 18
Lead Exposure 8 Disassembly 18
.22 Magnum Ammunition 9 Lubrication 22
Ammunition 10 Storage 22
Firing 13 Parts Purchasers 25
OTHER CAUTIONS AND WARNINGS APPEAR
THROUGHOUT THE MANUAL. 
						

							●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 RUGER
®MODEL 10/22®MAGNUMis an autoloading rifle cham-
bered for the .22 Winchester Magnum Rimfire cartridge. It is recoil (“blowback”)
operated and uses a 9-shot rotary magazine. Retracting the bolt handle cocks the
internal hammer and compresses the recoil spring. When the bolt is manually
released, it moves forward (driven by the recoil spring), strips a cartridge from
the magazine, if a loaded magazine is in place, and chambers the cartridge. The
bolt is held against the chambered cartridge by the recoil spring.
When the trigger is pulled, the hammer is released and strikes the firing pin.
The firing pin indents the cartridge case rim and ignites the priming compound
inside the rim. This ignites the powder in the cartridge case and a great volume
of gas is instantly generated, which acts on the interior of the cartridge case in
all directions.
Because the bullet offers the least resistance, it moves out of the cartridge case
and exits the muzzle. The bolt then moves rearward automatically, extracting
and ejecting the fired cartridge case, and at the same time cocking the hammer
and compressing the recoil spring, etc., as described above. Once the trigger is
released, the rifle is ready to fire again.
Each time the trigger is pulled and released, the same cycle is repeated until
there are no more cartridges in the magazine or in the chamber.
The rifle will fire if there is a cartridge in the chamber and the trigger is pulled,
whether or not there is a magazine in place! Removing the magazine does not
unload the rifle. Never assume the rifle is unloaded. Visually inspect the chamber
and the magazine each time the rifle is handled to be certain there are no car-
tridges in either.
5 
						

							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 except when the shooter is
actually firing the gun. The safety should be moved to the “on” position whenever
the shooter ceases firing, even temporarily.
All models include the following features with which the gun user should be
thoroughly familiar.
Figure 1. In these illustrations the frequently used operating components are identified.
Note that the safety is protruding fully from the right side of the trigger guard and is there-
fore in its “on” (safe) position.
NOMENCLATURE
StockReceiverRear SightFront Sight
BarrelBarrel BandTrigger Guard
(housing)
Scope Mount Bases
Bolt  
						

							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 the
safety is shown in the “off” (fire) position. The position of the safety and red band indicate
the safety is “off.” It should be in this position only
when you are actually firing at a target.
The safety is held in its “on” or “off” position by a plunger that is under spring
tension. When the safety is moved to either the “on” or “off” position, a distinct
“click” should be heard. Frequently check the position of the safety to be certain
the safety has not been inadvertently moved. If the safety seems to move too eas-
ily, or if the click is not heard when the safety is moved, stop using the rifle and
return it to the Newport Product Service Department for repair (see p. 24).
!WARNING – MANUAL SAFETY
SAFETY IN “ON” (SAFE) POSITION
Keep the safety on unless actually firing.
Always move the safety fully to its intended
position and check
it. The safety  is not “ON”
unless it is completely “ON”. Never depend on
a safety mechanism or any other mechanical
device to justify careless handling or permit-
ting the rifle to point in an unsafe direction.
The only “safe” rifle is one in which the bolt is
open, the chamber is empty, and there is no
magazine in the gun.
KNOW HOW TO USE THE SAFETY 
						

							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 the bolt handle and it will move forward a fraction of an inch, and
then be locked in its open position.
To release the bolt:Retract the bolt handle to its extreme rearward position and
then press in on the upper
section of the bolt lock. Release the bolt and it will
move fully forward.
NOTE:Simply retracting the bolt will not disengage the lock. The bolt lock must
be deliberately pressed up while the bolt is held fully to the rear. Only then will
the bolt close when released. This is designed to prevent accidental release of the
bolt from its open position.
Press Backto Lock Bolt OpenPress Upto CloseBolt
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 other serious
physical injury. Have adequate ventilation
at all times. Wash hands thoroughly after
exposure.
SHOOTING OR CLEANING GUNS
MAY EXPOSE YOU TO LEAD
!WARNING – LEAD EXPOSURE 
						

							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.
USE ONLY
.22 WMR AMMUNITION
9
AMMUNITION
The RUGER®MODEL 10/22®MAGNUM is chambered for, and designed
to properly function with, onlythe .22 Winchester Magnum Rimfire cartridge,
both jacketed and hollow point, manufactured to U.S. industry standards. Do not
use any other .22 caliber ammunition in this rifle as burst cases and the release
of hot powder gas can result. See “.22 Magnum Ammunition Warning”, below.
USE ONLY FACTORY AMMUNITION LOADED
TO U.S. INDUSTRY STANDARDS
However, your choice of ammunition may affect the functioning of this firearm.
Ammunition manufacturers use different powders, bullets and case specifica-
tions. If you find that you are experiencing feeding and extraction problems,
switching to another type or brand of .22WMR ammunition may improve the sit-
uation.
!WARNING – .22 MAGNUM AMMUNITION
.22 WMR
    .22
Long Rifle .22
Long .22
Short
AMMUNITION (CARTRIDGES) NOTICE
WE SPECIFICALLY DISCLAIM RESPONSIBILITY FOR ANY DAMAGE
OR INJURY WHATSOEVER OCCURRING IN CONNECTION WITH, OR
AS A RESULT OF, THE USE IN ANY RUGER FIREARMS OF FAULTY,
OR NON-STANDARD, OR “REMANUFACTURED” OR HAND-LOADED
(RELOADED) AMMUNITION, OR OF CARTRIDGES OTHER THAN THOSE FOR
WHICH THE FIREARM WAS ORIGINALLY CHAMBERED. 
						

							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
Magazine
(incorrect)
Never attempt to use .22 Long Rifle ammunition in Ruger 10/22 Magnum rifle
magazines. The cartridges have a smaller case diameter and can split or burst
when fired in the larger magnum chamber, releasing hot powder gasses and par-
ticle fragments out of the action at high speed, possibly resulting in injury to the
shooter or bystanders.
!WARNING – AMMUNITION
Death, serious injury, and damage can
result from the use of wrong ammu-
nition, bore obstructions, powder
overloads, or incorrect cartridge com-
ponents. .22 cases are very thin and
sometimes split when fired. Always
wear shooting glasses and hearing
protectors.
IMPROPER AMMUNITION
DESTROYS GUNS
Do NotUse in Ruger 10/22 Magnum