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A choke is designed to alter or shape the distribution of the shot as it leaves the firearm. For shooting most game birds and clay pigeons, a desirable pattern is one that is as large as possible while being dense enough to ensure multiple hits on the target, at a particular range. The choke should be tailored to the range and size of the targets.
Muzzle devices, like a flash suppressor, muzzle brake or choke, and with muzzle brakes in particular, can cause material buildup from copper, lead, etc. upon firing. In particular, firing of saboted ammunition in firearms with muzzle devices can leave behind residue in the bore upon firing, which can cause an increase in barrel and chamber ...
Length of pull is an important ergonomic factor for ease of use; and optimum length of pull may vary with the size of the shooter, the thickness of chest clothing and body armor being worn, [1] and whether the shooter is firing from a standing, sitting, or prone position.
Therefore with a 12-gauge, it would take 12 balls of lead of the same size as the 12 gauge shotgun's inner bore diameter to weigh 1 pound (454 grams). [6] The term is related to the measurement of cannons, which were also measured by the weight of their iron round shot; an eight-pounder would fire an 8 lb (3.6 kg) ball. Therefore, a 12 gauge is ...
Choke: A tapered constriction of a shotgun barrel's bore at the muzzle end. Chokes are almost always used with modern hunting and target shotguns, to improve performance Chokes are almost always used with modern hunting and target shotguns, to improve performance
Gas checks are most commonly found in the form of a thin cup or disc made of a ductile metal. Copper, zinc, aluminum, and alloys such as brass have been used. A bullet designed to accept a gas check has a rebated base shank which permits attachment of the check without altering the maximum diameter of the bullet.
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Conversions for short recoil pistols, such as the M1911, Glock, and Beretta 92 consist of a new upper assembly and magazine. Conversions for .22 caliber centerfire rifles and carbines such as the AR-15 and Mini-14 consist of a magazine and an insert that replaces the bolt and includes a cartridge conversion insert that goes into the chamber.