Winchester Repeating Arms Supreme User Manual
Licensee
Winchester Supreme Over/Under Shotgun Owner’s Manual
Important instructions for
Winchester Supreme
Over/Under Shotgun
Customer Service Department (United States)
U. S. Repeating Arms Company, Inc.
275 Winchester Avenue
Morgan, Utah 84050-9333
Phone: 1-800-945-5237
If you have any questions or comments regarding your new
firearm, please feel free to write or call us.
below to record information about your new firearm.
Model _________________________________________
Serial Number __________________________________
Purchased From _________________________________
Date of Purchase ________________________________
Winchester trademarks licensed from Olin Corporation.
PRINTED IN U.S.A. EP01021/00445
Use the space
Contents Page
Gun safety warnings . . . . . . . . . . . . . . . . . . . . . . . . . .1
General description . . . . . . . . . . . . . . . . . . . . . . . . . . .2
General operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Terminology and descriptions . . . . . . . . . . . . . . . . . . .5
Serial number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Ammunition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Initial cleaning/oiling . . . . . . . . . . . . . . . . . . . . . . . . .9
Operation of the safety . . . . . . . . . . . . . . . . . . . . . . .10
Barrel selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Loading procedures . . . . . . . . . . . . . . . . . . . . . . . . . .16
Unloading procedures . . . . . . . . . . . . . . . . . . . . . . .18
Firing procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
In the case of a misfire . . . . . . . . . . . . . . . . . . . . . . .21
Invector®Plus choke system . . . . . . . . . . . . . . . . . . .21
Changing length of pull (special models) . . . . . . . . .24
Cleaning and maintenance suggestions . . . . . . . . . .25
Parts, service, repair and questions . . . . . . . . . . . . . .28
Winchester-guns.com . . . . . . . . . . . . . . . . . . . . . . . .28
GUN SAFETY WARNINGS
IT IS ESSENTIAL THAT THESE OPERATING
INSTRUCTIONS BE THOROUGHLY STUDIED BEFORE
USING THIS FIREARM TO ASSURE PROPER AND
SAFE GUN HANDLING. FAILURE TO FOLLOW THESE
INSTRUCTIONS OR FAILURE TO OBEY ANY SAFETY
WARNING MAY RESULT IN INJURY TO YOURSELF OR
OTHERS, OR CAUSE DAMAGE TO YOUR GUN.
As a gun owner, you accept a set of demanding responsibilities. How seriously you take these responsibilities can
be the difference between life and death. There is no
excuse for careless or abusive handling of any firearm.
At all times handle your Supreme shotgun and any other
firearm with intense respect for its power and potential
danger.
PLEASE READ AND UNDERSTAND ALL OF THE
CAUTIONS, PROPER HANDLING PROCEDURES AND
INSTRUCTIONS OUTLINED IN THIS BOOKLET
BEFORE USING YOUR NEW FIREARM.
1. Do not carry a loaded gun with a live round in the
chamber while walking, running, climbing a tree, crossing
a fence or anywhere you might slip or fall, drop the gun
or otherwise bump or jar the gun. A gun that is dropped,
bumped, or jarred with a chambered round might accidentally discharge even with the safety on, causing serious
injury to you or someone else. When a round is chambered
keep the safety on until you are ready to shoot.
2. Do not rely on the safety to prevent accidental
discharge. Many safeties merely block the trigger and
prevent firing by pulling the trigger. The safety may not
prevent an accidental discharge due to dropping, jarring,
or bumping a gun.
3. Use only ammunition for which the gun is chambered
as indicated on the barrel, to prevent excessive pressure
and possible serious personal injury.
4. Incorrectly reloaded ammunition can cause serious
personal injury and damage to the firearm due to excessive
pressure. Reload only after proper instruction and in strict
compliance with instruction and data contained in current
reloading manuals.
5. Never point a gun at anything you do not intend to
shoot. Always keep it pointed in a safe direction in case
of accidental discharge.
6. Always check to ensure that the barrel is free of
obstructions before loading and using the gun. If you
experience light recoil or off sound, check the barrel for
an obstruction.
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7. Before firing, clean any grease or oil out of barrel with
cleaning rod and patch. Grease or heavy accumulation of
oil can cause excessive pressure and result in serious
personal injury.
8. Keep barrel, chamber and action free of rust. Rust in
the barrel and chamber can cause excessive pressures
resulting in serious injury. A rusted, pitted or eroded
barrel should be replaced.
9. Use hearing protection to prevent ear damage from
repeated exposure to gunfire.
10. Always use proper shooting glasses to prevent eye
injury from flying particles.
11. Never carry a loaded gun in a motor vehicle or carry
one into a dwelling. Always carefully unload the gun
before entering a motor vehicle, a dwelling or an area
such as a camp. Always point a gun in a safe direction
while loading or unloading to prevent serious injury in
case of an accidental discharge. Never load in the house
or in your vehicle.
12. Never shoot at a hard, flat surface or at the surface
of water to avoid a ricochet and possible serious personal
injury to yourself or a bystander.
13. Store gun in a clean dry place out of reach of children
and separated from stored ammunition.
14. Never alter any parts of your gun. Any alterations or
adjustments that may become necessary to the operating
mechanism should be performed by a qualified gunsmith.
15. Hunting from elevated surfaces such as tree stands is
dangerous. Doing so may increase the risk of handling any
firearm. Always make certain that the stand being used is
safe, sturdy and stable. Always make certain your firearm
is unloaded when it is being taken up and down from the
stand. Always make certain that your firearm is not
dropped from the stand or dropped while it is being taken
up or down from the stand.
16. Discharging firearms in poorly ventilated areas, cleaning
firearms, or handling ammunition may result in exposure
to lead and other substances known to cause birth defects,
reproductive harm and other serious physical injury. Have
adequate ventilation at all times. Wash hands thoroughly
after exposure.
GENERAL DESCRIPTION/OPERATION
Balance. Pointability. Reliability. Handling. These are
what you expect in an over/under, and they’re what you
get with your new Winchester Supreme. It’s superbly
designed, combining the best traditions of American
hunting guns and European competition guns. Supreme
Field models are ready for many years of brisk Nebraska
pheasant hunts to dusty Texas quail hunts to New
England grouse hunts accented by bright fall colors.
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Handling is its key advantage with a lively feel and
dimensions designed so you can quickly acquire and move
to target.
Sporting models are true competition over/unders from
Winchester. A great sporting clays shotgun begins at the
receiver. The Supreme’s low-profile receiver with dual,
between-the-barrel lockup is the foundation. This, combined with stock dimensions designed to put you on target
consistently, brings the package together. It’s the right
design. The right dimensions. The right balance. The
right shotgun for serious sporting clays competitors.
A few things to take notice of are:
• Low-profile receiver. The perfect receiver design for the
optimal combination of action strength, pointability and
balance.
• Strength is important. The Supreme features dual locking pins — made to stay tight under years of heavy use.
• Invector-Plus. This is the same choke system found on
today’s leading sporting and hunting guns world-wide.
The longer tubes, combined with back-bored barrels,
reduce shot deformation and produce consistent, tight
patterns across the entire choke spectrum. (Your choke
tubes may be marked “Win-Plus.” However, there is no
difference.
• Barrel selector. The selector is integrated into the top
tang safety. You can select which barrel fires first and the
other barrel fires with the next pull of the trigger.
In order to keep your new shotgun in top condition and
operating at its peak performance you must read, understand and follow all of the instructions in this manual.
GENERAL OPERATION
The Supreme is an over and under shotgun design made
to fire two successive shots by pulling the trigger twice —
once for each shot. Each time the action is broken open
the hammers are cocked automatically. Each time the
action is opened empty shells (one or two) are ejected
clear of the chamber(s) automatically. Unfired shells are
elevated in the chamber. They can be left in place or
removed with your fingers. The action is broken open
with a lever mounted on the top of the receiver just forward of the safety switch. The Supreme breaks down into
three pieces in just seconds for cleaning or storage.
Prior to using live ammunition, familiarize yourself
thoroughly with all the operating instructions in this manual. Get accustomed to the feel of your new gun. Know
the forces required to operate the action. Understand how
to select the firing order of the barrels. Learn how to pull
the trigger correctly, and above all, know the location and
operation of the safety. Procedures for disassembly and
operation of various components are outlined in the sections below. Please read and study them thoroughly.
3
Buttstock
Safety/Barrel Selector
Top Lever
Receiver
Mid Sight Bead (found
on some models)
Vent Rib
FIGURE 1-A
Front Sight Bead
Trigger
Recoil Pad
Fully Disassembled Forearm Release Latch Lug
Chambers
Trigger
Guard
Forearm Extension
4
Forearm
Side ribs
Forearm Release Latch
Muzzle
FIGURE 1-B
Invector Plus Choke System
®
Locking Pins
FIGURE 1-C
FIGURE 1-D
Firing Pins
Cocking Lever
Hinge Pin
In addition, always remember:
IMPORTANT: ALWAYS KEEP THE MUZZLE POINTED IN
A SAFE DIRECTION.
USE THE CORRECT AMMUNITION AS REFERENCED BY
THE INSCRIPTION ON THE BARREL.
BEFORE LOADING YOUR GUN BE SURE ALL
GREASE AND OIL HAVE BEEN REMOVED FROM
THE BARREL AND CHAMBERS, AND THERE ARE NO
OBSTRUCTIONS.
Locking Pin Recesses
Hinge Bearing surface
Ejectors/extractors
TERMINOLOGY AND DESCRIPTIONS
Descriptions in this manual generally refer to the gun in
the horizontal position. That is, in the normal firing
position. For example, the muzzles are forward or front;
the butt stock is rearward or rear; the trigger is downward
or underneath; the sight plane is upward or on top. For
general parts terminology, refer to Figure 1-A.
The Winchester Supreme is also shown disassembled to
the extent necessary in order to follow instructions
contained in this book (See Figure 1-B). Details of the
action are also shown (See Figures 1-C and 1-D).
(Continued on page 8)
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SUPREME FEATURES
Stocks are profiled for ideal fit, fast handling
and lower recoil on the face.
Deluxe recoil pad for
maximum comfort.
The top tang safety offers excellent convenience
with both gloved and ungloved fingers. Plus, it is
ambidextrous for right or left-handed shooters.
On sporting models the trigger is
adjustable for length of pull.
The Supreme has a very compact, low-profile receiver with an
ideal combination of action strength and balance. The receiver is
quick and lively, not too small and not too bulky.
The dual locking pins are located high,
between the barrels, one on each side —
made to stay tight under years of heavy
use. The pins are larger and sturdier than
some competitive models. This optimizes
strength of the action while allowing an
overall lower profile of the receiver than
found on some other over/unders.
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The barrel is back-bored for improved pattern performance. Back-boring means
that the barrels are made with a slightly larger inner bore diameter than
traditional dimensions. This results in less resistance to the shot column as it
moves down the bore and less deformation of pellets as they move through the
forcing cone. There is also a slight decrease in perceived recoil.
The barrels and forearm remove
for easy cleaning and storage.
When empty shells are ejected from a Supreme they leave the
chambers at virtually the same time, flying side-by-side through
the air. This is a sign of a very well timed mechanism.
FIGURE 2
Supremes feature a durable, traditional rib
design in both field and sporting widths.
Supreme models are fitted with the proven Invector Plus choke system.
These longer tubes have special tapers for optimum patterning — plus they
are specially designed for back-bored barrels. It allows you to change choke
constrictions to meet the demands of the game being hunted or target shot.
Extra-full choke tubes are available for hunting turkey or other game requiring
extremely tight patterns with lead shot loads.
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Figure 2 covers the general features and benefits of the
Supreme design.
Throughout this manual the “action” refers to the mechanism of this shotgun that secures the shell in the chamber.
SERIAL NUMBER
The serial number is located on the top tang of the receiver under the top lever. A duplicate number is located on
the bottom of the barrels (when removed) on the flat surface crossing the barrels below the hinge bearing surface.
Record the serial number at the front of this manual for
future reference.
AMMUNITION
There are several different versions of the Supreme. The
gauge and chamber length are inscribed on the side of the
barrel, forward of the receiver. They are inscribed as follows on the receiver:
• 2 3/4" and 3" Magnum. These models are designed to
shoot all factory loads from 2 3/4" up to 3" Magnums.
The chamber is designed to accept up to 3" factory loads.
(It is not designed to shoot 3 1/2" shells.)
• 2 3/4". Supreme shotguns with this designation are
usually target models. They are specifically configured to
be able to handle all factory 2 3/4" loads including the
lightest target loads up to heavy 2 3/4" hunting field loads.
(2 3/4" Target models are NOT designed to shoot 3" or
3 1/2" shells.)
Take extreme care to note the gauge of your shotgun as
inscribed on the side of the barrel. You must shoot only
shells of the correct gauge. For example, inadvertently
placing a 20 gauge shell in a 12 gauge gun is extremely
hazardous. The 20 gauge shell can slide forward through
the chamber. The rim of a 20 gauge shell will stop when it
comes in contact with the end of the 12 gauge chamber
(an area called the forcing cone). It is possible for the
shooter to think that the chamber simply is not loaded
and then insert a 12 gauge shell over the top of the 20
gauge shell. When the 12 gauge shell is fired this will
cause the barrel to burst, destroying your gun and possibly
causing serious injury to yourself or others.
Never mix shells of different gauges in hunting clothes or
other gear. Train young shooters about the importance of
using the correct ammunition for any gun.
MAKE SURE YOU USE ONLY THE EXACT AMMUNITION/GAUGE AS LISTED ON THE LEFT SIDE OF
THE BARREL.
U.S. REPEATING ARMS COMPANY, INC., CAN ASSUME
NO RESPONSIBILITY FOR INCIDENTS WHICH
OCCUR THROUGH THE USE OF CARTRIDGES OF
NONSTANDARD DIMENSION OR THOSE THAT WHEN
8
Be sure you lightly oil your
Supreme at these points.
FIGURE 3
SHOT, DEVELOP PRESSURES IN EXCESS OF
INDUSTRY STANDARDS ESTABLISHED BY THE
SPORTING ARMS AND AMMUNITION
MANUFACTURERS’ INSTITUTE (SAAMI).
DISCHARGING FIREARMS IN POORLY VENTILATED
AREAS, CLEANING FIREARMS, OR HANDLING
AMMUNITION MAY RESULT IN EXPOSURE TO LEAD
AND OTHER SUBSTANCES KNOWN TO CAUSE BIRTH
DEFECTS, REPRODUCTIVE HARM AND OTHER
SERIOUS PHYSICAL INJURY. HAVE ADEQUATE
VENTILATION AT ALL TIMES. WASH HANDS
THOROUGHLY AFTER EXPOSURE.
Incorrectly reloaded ammunition can cause serious
personal injury and damage to the firearm due to excessive
pressure. Reload only after proper instruction and in strict
compliance with instructions and data contained in
current reloading manuals.
Winchester ammunition is always an excellent choice for
your new Winchester firearm, delivering the unmatched
performance and dependability you want.
INITIAL CLEANING / OILING
Some metal parts of your new Supreme have been coated
at the factory with a rust preventative compound. Before
using your Supreme, clean the anti-rust compound from
the inside of the barrels, receiver area, locking pin mechanism, extractors/ejectors, hinge surfaces and the chamber
areas. A high quality, lightweight gun oil should be used
to remove this compound and to give your new gun its
first lubrication. Clean the barrels using a cleaning rod
and patch as explained under “Cleaning and Maintenance
Suggestions” found later in this manual.
If your new Supreme is to be stored for an extended period
of time, it is permissible to leave the rust preventative
compound in place and keep your Supreme in its box for
maximum protection during long-term storage.
Before beginning assembly of your Supreme you should
first wipe the mechanism clean and apply a few drops of
quality oil on the surfaces shown (see Figure 3).
Avoid applying too much oil. Only a light film is
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