The most certain way to bulge or rupture a shotgun barrel is to load a smaller gauge shell into a larger gauge chamber. The smaller gauge shell will not fall completely through the barrel; its rim is caught by the front of a larger gauge chamber or at the larger gauge’s choke. Your shotgun will misfire (with the chamber appearing to be empty). It is then possible to load the correct gauge shell behind the smaller gauge shell. If the shotgun is then fired, the result will be a so-called “12-16, 12-20, 20-28 or 28-.410 burst” which can cause extensive damage to your shotgun and possible serious injury to you and others.
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It is then possible to load the correct gauge shell behind the smaller gauge shell. If the shotgun is then fired, the result will be a so-called “12-16, 12-20, 20-28 or 28-.410 burst” which can cause extensive damage to your shotgun and possible serious injury to you and others.
The barrel and action of this firearm have been made with safety margins over the pressures established by the Sporting Arms and Ammunition Manufacturers’ Institute (SAAMI) for Service Cartridges. However, we assume no responsibility for incidents which occur through the use of cartridges of nonstandard dimension or those developing pressures in excess of SAAMI established standards.
Maxus II 12 gauge, 3" chamber models will shoot all 12 gauge, 2¾" and 3", 1 oz. and heavier factory lead and steel target loads. Maxus II 12 gauge, 3½" chamber models will shoot all 1 oz. and heavier factory lead and steel 12 gauge, 2¾", 3" and 3½" field loads.
MAGAZINE CAPACITY
With the magazine three-shot adaptor (plug) removed, A5 3" shotguns will hold four 2¾" or three 3" shells in the magazine. A5 3 1⁄2" shotguns will hold four 2 ¾" shells, or three 3" or 3 1⁄2" shells in the magazine.
Speed Unloading
1. With the “safety” in the on safe position, turn the shotgun over so the trigger guard is facing up, then depress the carrier with your finger as far as it will go.
2. Shells are retained in the magazine by the shell stop that catches the rim of the shell base. Locate the shell stop inside the receiver on the right side of the loading port (visually to the left side when looking down into the loading port).
3. Push inward on the shell stop with your index finger (Figure 14) to release a shell from the magazine. As the shell stop is pressed in, a shell will be forced out of the magazine under spring pressure. Catch the shell in your hand as it comes out.
4. Press the stop again to release the next shell. Continue to do this until the magazine is empty. Be careful not to pinch your finger.
5. With the “safety” still in the on safe position, pull rearward on the bolt handle to eject the shell from the chamber. The bolt will lock rearward when the action is cycled with an empty magazine.
6. Using your index finger, feel the opening of the magazine to make sure there are no shells that have not been fed from the magazine and ejected. Visually inspect the chamber, feed mechanism and magazine to ensure there are no shells remaining.
Unloading by Cycling the Action
1. With the “safety” in the on safe position, grasp the bolt handle and cycle the action until all shells are transferred from the magazine to the chamber and then ejected. Take care to avoid damaging shells. Avoid letting them fall to the ground.
2. When the last shell in the magazine has been cycled through the chamber and out the ejection port, the bolt will lock rearward. The bolt will lock rearward when cycled with an empty magazine.
3. Using your index finger, feel the opening of the magazine to make sure there are no shells that have not been fed from the magazine and ejected. Visually inspect the chamber, feed mechanism and magazine to ensure there are no shells remaining.
MAGAZINE CUT-OFF
Maxus II shotgun barrels are threaded to accept the Invector-DS choke system. Confirm the choke system of your shotgun by looking on the right side of the barrel where the specifications are inscribed. Invector choke tubes are identified in Figure 17 (flush mount tubes are shown).
The constriction of each choke tube is indicated twice on the choke tube: On the side of the tube, and indicated with a “notch” code on the top rim of the tube. The included choke tube T-Wrench is used to remove and install choke tubes.
Some target shotguns include premium extended choke tubes. The constriction of premium choke tubes is indicated twice on the choke tube: On the side of the tube, and indicated with an abbreviation in he colored band. The constriction of flush fit choke tubes is indicated twice on the choke tube: On the side of the tube, and indicated with a “notch” code on the top rim of the tube.
The included choke tube T-Wrench is used to remove and install
choke tubes.
Invector choke tubes are compatible with factory ammunition that has been loaded in compliance with SAAMI specifications, including magnum lead and steel shot loads, sabots and shotgun slug loads.
Replacement and additional tubes and wrenches are available from your Browning dealer, or by contacting our Consumer Department. See “Service or Repair” on page 56 for contact information.
CHOKE TUBE SELECTION
To help you choose the correct choke tube for each hunting and shooting situation, all Browning Invector choke tubes are inscribed on the side with the patterns they produce with both lead and steel shot. Each Invector tube also has notches in the top rim of the tube (Figure 18). These notches are a code to identify the choke designation while the tube is installed. Rim notches refer specifically to lead shot. Use the chart to cross-reference from lead to steel, and determine the appropriate tubes for your ammunition and hunting/shooting situation.
Several choke tubes are supplied with your shotgun. The choke tubes listed are also available as accessories. Remember, Standard Invector, Invector-Plus and Invector-DS tubes are not interchangeable.
Invector-Plus and Invector-DS tubes are for Browning shotguns with back-bored barrels only. Before removing or installing tubes, or reading the rim notch code, make sure the shotgun is fully unloaded.
CHOKE TUBE REMOVAL
1. Place the “safety” in the on safe position. Always make sure the shotgun is completely unloaded. Keep the muzzle pointed in a safe direction.
Six shims are included with your new shotgun (Figure 25). The shims fit between the buttstock and receiver, allowing customized adjustments to the comb and heel. Each shim is labeled/stamped for a specific amount of adjustment. The neutral shim, No. 2, is already installed on your shotgun.
Drop at comb is defined as the place on the comb that your cheek rests when taking aim. If drop at comb is correct, your eye naturally falls in line with the sight.
Shims marked 1, 2 and 3 do not give any cast on or off. The stock remains straight. They only adjust drop at comb.
These shims with their respective stamps are further clarified here:
• Shim 1 raises the comb approximately 1/16", and the heel approximately 1/8".
• Shim 2 is neutral. This shim is already installed on the firearm.
• Shim 3 lowers the comb approximately 1/16", and the heel approximately 1/8".
Some right-handed shooters like the stock to angle away (cast off) from their face, making their line of sight more directly in line with the barrel. Angling the stock to the left for left-handed shooters is “cast on.” Shims marked 1R1L, 2R2L, and 3R3L, will all adjust drop at comb the same amount as shims 1, 2 and 3, and will also adjust the cast right or left approximately 1/8". You will notice that the two opposing edges of these spacers are different in thickness. For right-handed shooters, install shims between the receiver and the stock with the R facing the end of the buttstock, so its thicker side is on the left side. This casts the stock slightly to the right, away from the face of a right-handed shooter. If you turn the shim around so the L is facing the end of the buttstock, and it will cast the stock to the left. These shims with their respective stamps are further clarified here:
• Shim 1R1L raises the comb approximately 1/16", and the heel approximately 1/8" and will adjust the cast on or cast off
approximately 1/8".
• Shim 2R2L adds the same amount of cast to the stock as shim 1R1L with neutral drop like shim 2.
• Shim 3R3L adds the same amount of cast to the stock as shims 1R1L and 2R2L, and lowers the comb approximately 1/16" and the heel approximately 1/8".
INSTALLING A SHIM
IMPORTANT: Before loosening the buttstock to install shims, the trigger group should be in position in the receiver. This aligns the buttstock and makes assembly easier.
1. Make sure your shotgun is completely unloaded and the “safety” is in the on safe position.
2. Use a #2 cross tip or Phillips screwdriver to remove the recoil pad from the buttstock (Figure 20.) Place a small amount of petroleum jelly on the screw access slits on the top and bottom of the rear of the buttstock to prevent damaging the recoil pad. Insert the screwdriver into each of the two access holes. Make certain the tip of the screwdriver engages the head of the screw. Turn the screw counterclockwise until the screw is completely loose from the stock. When both screws are free, remove the recoil pad.
1. Place your shotgun on a table or other safe/secure location. Protect the finish with rags or other padding.
2. You should have a compatible one-piece style base and three screws of at least 11/32" in length.
3. Clean all oil, grease or dirt from the receiver top and from the scope base parts.
4. Position your shotgun in the horizontal position with the top of the receiver upward.
5. Remove all three filler screws from the top of the receiver using a very small, thin-bladed gunsmithing-type screwdriver.
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6. Pre-position the base on the receiver top to determine the best orientation of the base. Most bases have transverse grooves cut into them that are offset from the middle. These are the grooves that the crossbolts in your scope rings will pass through. The grooves are offset to allow you to position the bases to fit the design/length of your scope and the placement of the scope, front to rear for proper eye relief. Place both grooves to the rear, both to the front, or one in each direction, depending on the desired position of your scope.
7. Once you know which configuration you will use, insert the screws through the base and screw it into the receiver top using the
correct wrench or screwdriver (usually a 3/32" hex wrench). You must use screws which are at least 11/32" in length to ensure proper thread engagement. Once the bases are installed, check inside the receiver to verify that the base mounting screws are not too long and interfering with the operation of the bolt. Many gunsmiths find it helpful to use a drop of serviceable blue thread locking compound to ensure the screws stay tight. Make sure the thread-locking compound does not get into the action. Be careful to ensure that the threads of each screw engage properly in the threads in the receiver to prevent stripping the threads in the receiver.
8. Tighten the screws according to the scope base manufacturer's instructions. Do not over tighten.
9. Mount your scope rings and scope as outlined in the instructions supplied with your scope rings and/or scope. Always make sure you have the proper eye relief. Always make sure that the saddle crossbolts and cap bolts are fully tightened before using your shotgun.
CLEANING THE BARREL
Your Maxus IIshotgun will function better and more reliably over a longer period of time if it is properly maintained and kept clean. You should clean your shotgun after every day of shooting, and more often if it becomes excessively dirty. At a minimum the barrel should be cleaned and the action wiped clean and oiled after every day of shooting. The slide assembly should require only occasional cleaning.
Normal maintenance can be accomplished with the barrel still attached to the receiver (oiling and wiping down). More careful cleaning requires removal of the barrel from the receiver (cleaning the barrel) and the removal of the slide assembly. A complete cleaning requires removal of the slide assembly and trigger group.
If a malfunction occurs, perform a thorough cleaning to see if it solves the problem before seeking the services of a Browning Recommended Service Center, the Browning Service Facility in Arnold, Missouri, or a qualified gunsmith.
1. Place the “safety” in the on safe position. Open the action and inspect the chamber and magazine to make certain they do not contain any shells. Keep the muzzle pointed in a safe direction.
2. Remove the forearm and barrel as explained under “Disassembly”
3. Using a shotgun cleaning rod with a slotted tip or cleaning jag and a patch large enough for a snug fit in the bore, insert the rod and a lightly oiled patch into the breech end of the barrel and run it back and forth through the bore several times. Remove and wipe the choke tube, threads and barrel threads with a nylon brush and lightly oil.
Browning offers a complete line of products to make cleaning your firearm fast and easy. Be sure to follow the manufacturers' instructions when using any product to clean your firearm.
4. Inspect the bore from both ends for leading and plastic residue that often remains in the bore from the shot cups in modern shells. Leading and plastic residue will appear as longitudinal streaks and is usually more predominant near the muzzle and just forward of the chamber. A normal amount of either is common and not serious.
5. If leading or plastic residue seems excessive you can remove it by brushing the bore with a bronze brush. Soak the brush or spray the bore with a powder solvent first. Scrub until clean. To prevent bristles from breaking off, push the brush fully through the barrel each time before pulling it back through.
MAINTENANCE OF OIL FINISH STOCKS
Keeping the oil-finished wood surface on your firearm looking its
best requires only a small amount of maintenance. When the surface becomes spotted or dull, the affected area(s) can be treated using rubbing alcohol on a soft, lint free cloth and allowed to dry. A small amount of a linseed oil-based finish, such as Watco® Danish Oil Finish, Deft® Danish Oil Finish, or Formby’s® Tung Oil Finish should then be applied to the surface of the wood with a soft, lint free cloth according to the manufacturer’s instructions. To treat the checkering, a small amount of oil-based finish can be applied and then distributed evenly using a toothbrush or other soft bristled brush.
MODELS WITH SPECIAL FINISHES
As with any firearm, the only way to preserve its pristine condition and collector appeal is to never handle or fire it, which in turn would deprive you of much of the enjoyment that comes with owning a fine Browning firearm.
While special finishes such as engraving and gold plating greatly enhance the aesthetic appeal of your shotgun, please be aware that
they are no more durable, and in some cases may even be slightly less durable than more common firearm finishes.
As you use your shotgun, you can expect special finishes to wear in much the same manner as any other firearm finish. These marks are the honest product of the hours spent enjoying your firearm and each scuff and scratch will probably have a good story to go along with it.
CONNECTICUT
“UNLAWFUL STORAGE OF A LOADED FIREARM MAY RESULT IN IMPRISONMENT OR FINE.”
FLORIDA
“IT IS UNLAWFUL, AND PUNISHABLE BY IMPRISONMENT AND FINE, FOR ANY ADULT TO STORE OR LEAVE A FIREARM IN ANY PLACE WITHIN THE REACH OR EASY ACCESS OF A MINOR UNDER 18 YEARS OF AGE OR TO KNOWINGLY SELL OR OTHERWISE TRANSFER OWNERSHIP OR POSSESSION OF A FIREARM TO A MINOR OR A PERSON OF UNSOUND MIND.”
MAINE
“ENDANGERING THE WELFARE OF A CHILD IS A CRIME. IF YOU LEAVE A FIREARM AND AMMUNITION WITHIN EASY ACCESS OF A CHILD, YOU MAY BE SUBJECT TO FINE, IMPRISONMENT OR BOTH. KEEP FIREARMS AND AMMUNITION SEPARATE. KEEP FIREARMS AND AMMUNITION LOCKED UP. USE TRIGGER LOCKS.”
MARYLAND
“WARNING: Children can operate firearms which may cause death or serious injury. It is a crime to store or leave a loaded firearm in any location where an individual knew or should have known that an unsupervised minor would gain access to the firearm. Store your firearm responsibly!”
MASSACHUSETTS
“WARNING FROM THE MASSACHUSETTS ATTORNEY GENERAL: This handgun is not equipped with a device that fully blocks use by unauthorized users. More than 200,000 firearms like this one are stolen from their owners every year in the United States. In addition, there are more than a thousand suicides each year by younger children and teenagers who get access to firearms. Hundreds more die from accidental discharge. It is likely that many more children sustain serious wounds, or inflict such wounds accidentally on others. In order to limit the chance of such misuse, it is imperative that you keep this weapon locked in a secure place and take other steps necessary to limit the possibility of theft or accident. Failure to take reasonable preventative steps may result in innocent lives being lost, and in some circumstances may result in your liability for these deaths.”
“IT IS UNLAWFUL TO STORE OR KEEP A FIREARM, RIFLE, SHOTGUN OR MACHINE GUN IN ANY PLACE UNLESS
THAT WEAPON IS EQUIPPED WITH A TAMPER RESISTANT SAFETY DEVICE OR IS STORED OR KEPT IN A SECURELY LOCKED CONTAINER.”
NEW JERSEY
“IT IS A CRIMINAL OFFENSE TO LEAVE A LOADED FIREARM WITHIN EASY ACCESS OF A MINOR.”
NEW YORK CITY, NEW YORK
“THE USE OF A LOCKING DEVICE OR SAFETY LOCK IS ONLY ONE ASPECT OF RESPONSIBLE WEAPON STORAGE. ALL WEAPONS SHOULD BE STORED UNLOADED AND LOCKED IN A LOCATION THAT IS BOTH SEPARATE FROM THEIR AMMUNITION AND INACCESSIBLE TO CHILDREN AND ANY OTHER UNAUTHORIZED PERSONS. NEW YORK CITY LAW PROHIBITS, WITH CERTAIN EXCEPTIONS, ANY PERSON FROM ACQUIRING MORE THAN ONE FIREARM, OR MORE THAN ONE RIFLE OR SHOTGUN, WITHIN A 90-DAY PERIOD.”
NORTH CAROLINA
“IT IS UNLAWFUL TO STORE OR LEAVE A FIREARM THAT CAN BE DISCHARGED IN A MANNER THAT A REASONABLE PERSON SHOULD KNOW IS ACCESSIBLE TO A MINOR.”
Any person who resides in the same premises as a minor, owns or possesses a firearm, and stores or leaves the firearm (i) in a condition that the firearm can be discharged and (ii) in a manner that the person knew or should have known that an unsupervised minor would be able to gain access to the firearm, is guilty of a Class 1 misdemeanor if a minor gains access to the firearm without the lawful permission of the minor’s parents or a person having charge of the minor and the minor:
(1) Possesses it in violation of G.S. 14-269.2(b)
(2) Exhibits it in a public place in a careless, angry, or threatening manner;
(3) Causes personal injury or death with it not in
self defense; or
(4) Uses it in the commission of a crime.
TEXAS
“IT IS UNLAWFUL TO STORE, TRANSPORT, OR ABANDON AN UNSECURED FIREARM IN A PLACE WHERE CHILDREN ARE LIKELY TO BE AND CAN OBTAIN ACCESS TO THE FIREARM.”
WISCONSIN
“IF YOU LEAVE A LOADED FIREARM WITHIN THE REACH OR EASY ACCESS OF A CHILD YOU MAY BE FINED OR IMPRISONED OR BOTH IF THE CHILD IMPROPERLY DISCHARGES, POSSESSES, OR EXHIBITS THE FIREARM.”
PLEASE CONSULT YOUR LOCAL FEDERALLY LICENSED FIREARMS
RETAILER, STATE POLICE OR LOCAL POLICE FOR ADDITIONAL WARNINGS THAT MAY BE REQUIRED BY LOCAL LAW OR REGULATION. FIREARMS REGULATIONS CHANGE CONSTANTLY AND YOUR LOCAL AUTHORITIES ARE THE BEST SOURCE FOR THE MOST CURRENT INFORMATION ON SUCH LEGAL MATTERS.
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