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The .223 Remington (designated 223 Remington by SAAMI [4] and 223 Rem. by the C.I.P. [5], pronounced "two-twenty three") is a rimless, bottlenecked, centerfire intermediate cartridge. It was developed in 1957 by Remington Arms and Fairchild Industries for the U.S. Continental Army Command of the United States Army as part of a project to create ...
A full metal jacket (FMJ) bullet is a small-arms projectile consisting of a soft core (often lead) encased in an outer shell ("jacket") of harder metal, such as gilding metal, cupronickel, or, less commonly, a steel alloy. A bullet jacket usually allows higher muzzle velocities than bare lead without depositing significant amounts of metal in ...
Bullets used in many cartridges are fired at muzzle velocities faster than the speed of sound [10] [11] —about 343 metres per second (1,130 ft/s) in dry air at 20 °C (68 °F)—and thus can travel substantial distances to their targets before any nearby observers hear the sound of the shots.
Comparison of .223 Remington (left) and external propellant caseless 4.73×33mm Heckler & Koch G11 ammunition (right). Caseless ammunition ( CL ), [ 1 ] or caseless cartridge , is a configuration of weapon-cartridge that eliminates the cartridge case that typically holds the primer , propellant and projectile together as a unit.
Ammunition, also known as ammo, is the material fired, scattered, dropped, or detonated from any weapon or weapon system. [1] The term Ammunition includes both expendable weapons (e.g., bombs , missiles , grenades , land mines ), and the component parts of other weapons that create the effect on a target (e.g., bullets and warheads ).
The AR-15 rifle usually comes chambered for either the military cartridge 5.56×45mm or the .223 Remington. Because of the pressures associated with the 5.56×45mm, it is not advisable to fire 5.56×45mm rounds in an AR-15 marked as .223 Remington, since this can result in damage to the rifle or injury to the shooter. [1]
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Remington later adopted this military round as the .223 Remington, a very popular round for small game hunting. 7×64 mm : One of the most popular long-range game hunting rounds in Europe, especially in the countries such as France and (formerly) Belgium where the possession of firearms chambered for a (former) military round is forbidden or is ...