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Free recoil / Frecoil is a vernacular term or jargon for recoil energy of a firearm not supported from behind. Free recoil denotes the translational kinetic energy ( E t ) imparted to the shooter of a small arm when discharged and is expressed in joules (J), or foot-pound force (ft·lb f ) for non-SI units of measure.
For example, gas-operated shotguns are widely held to have a "softer" recoil than fixed breech or recoil-operated guns (although many semi-automatic recoil and gas-operated guns incorporate recoil buffer systems into the stock that effectively spread out peak felt recoil forces.) In a gas-operated gun, the bolt is accelerated rearwards by ...
An M40 recoilless rifle on its M79 "wheelbarrow" tripod Diagram of the operation of a recoilless rifle using a vented case. A recoilless rifle (), recoilless launcher (), or simply recoilless gun, sometimes abbreviated to "RR" or "RCL" (for ReCoilLess) [1] is a type of lightweight artillery system or man-portable launcher that is designed to eject some form of countermass such as propellant ...
Pellet exiting muzzle, with formula for energy overlaid.. Muzzle energy is the kinetic energy of a bullet as it is expelled from the muzzle of a firearm. Without consideration of factors such as aerodynamics and gravity for the sake of comparison, muzzle energy is used as a rough indication of the destructive potential of a given firearm or cartridge.
Carl Gustav recoilless rifle: Saab Bofors Dynamics: 84 mm SS AT Sweden: 1946 55 S 55: FDF Vammaskoski factory 89 mm SS AT Finland: 1955 RCL 3.45 inch Gun: Broadway Trust Company 3.45 in (88 mm) SS RCL United Kingdom: M67: 3.54 in (90 mm) SS RCL United States: 1960s Pvpj 1110: Saab Bofors Dynamics: 90x760 mm HEAT SS RCL Sweden: 1953 95 S 58-61: ...
In both the open and standard rifle divisions, minor power factor is dominating due to less recoil, and 5.56×45mm/ .223 Rem is a common caliber. Ammunition loaded to major power factor such as 7.62×51 mm/ .308 Win has a bigger recoil impulse, and is regarded as having an advantage on stages with targets at long range.
Key for recoil operation diagrams. Gun fires to the right. Block diagram of long recoil operation cycle. 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]
The Remington Model 8 rifle was the first commercially successful semiautomatic rifle offered for civilian sale in the United States. [7] It is long recoil-operated and uses a rotating bolt head. After firing, the barrel and bolt, still locked together, move rearward inside the receiver and compress two recoil springs. Then the bolt is held ...