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Long recoil operation is found primarily in shotguns, particularly ones based on John Browning's Auto-5 action. In 1885 a locked breech, long recoil action was patented by the Britons Schlund and Arthur. [9] In a long recoil action, the barrel and bolt remain locked together during recoil, compressing the recoil springs.
The change from one barrel to the other may be done by a clockwork type system, where a cam alternates between barrels, or by an inertial system where the recoil of firing the first barrel toggles the trigger to the next barrel. A double-barreled shotgun with an inertial trigger works best with full power shotshells; shooting low recoil ...
The nature of the recoil process is determined by the force of the expanding gases in the barrel upon the gun (recoil force), which is equal and opposite to the force upon the ejecta. It is also determined by the counter-recoil force applied to the gun (e.g. an operator's hand or shoulder, or a mount).
Back bore, backbored barrel: A shotgun barrel whose internal diameter is greater than nominal for the gauge, but less than the SAAMI maximum. Done in an attempt to reduce felt recoil, improve patterning, or change the balance of the shotgun. Bandolier or bandoleer: A pocketed belt for holding ammunition and cartridges, usually slung across the ...
When a gun is fired it recoils and various forces are introduced which cause the barrel and shot to move in a direction perpendicular to the axis of the barrel. [ 10 ] [ 11 ] [ 12 ] The shot may also have angular displacements about axes perpendicular to its longitudinal axis.
The Browning Auto-5 is a long-recoil operated semi-automatic shotgun. Shells are stored in a tubular magazine under the barrel. When a chambered shell is fired, the barrel and bolt recoil together (for a distance greater than the shell length) and re-cock the hammer.
The shotgun is multicharged, with a tubular underbarrel magazine of 3-cartridge capacity. Reloading is provided with a removable fore-end. The presence of the special barrel rear projection on the frame combined with the rear sight gives the possibility of mounting an optical sight. The shotgun is intended for the amateur hunting with shot ...
The 20-gauge shotgun, also known as 20 bore, is a type of smoothbore shotgun. 20-gauge shotguns have a bore diameter of .615 in (15.6 mm), while the 12-gauge has a bore diameter of .729 in (18.5 mm). [ 2 ] 12-gauge and 20-gauge shotguns are the most popular gauges in the United States .