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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 ...
Similar, but not interchangeable with .223 Rem. 5.6mm Gw Pat 90: 1987 Switzerland R 5.56×45mm 3168 1243 0.622 28.5 0.224 45mm Swiss military version of the 5.56×45mm NATO / 223 Remington. For SIG SG 550 and variants. 5.7×28mm: 1990 Belgium 1 [7] R 5.7×28mm 2800 400 [8] 0.286 13 0.224 28mm Bottlenecked high velocity PDW cartridge designed by ...
7.62×39mm lead core, bi-metal copper-steel full metal jacket bullet, polymer coated steel case, non-corrosive, berdan primed; 7.62×39mm HP lead core, bi-metal copper-steel hollow point bullet, polymer coated steel case, non-corrosive, berdan primed [9] 7.62×39mm ELITE lead core, copper full metal jacket bullet, brass case, non-corrosive ...
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.
Non-compliant semi-armor-piercing and armor-piercing rounds have steel penetrators or steel cores that will be attracted by a magnet. The NORINCO copper-plated steel-jacketed Full Metal Jacket bullets would be attracted by a magnet – making it hard to distinguish between compliant lead-core and non-compliant steel-cored ammunition.
The .223 WSSM was introduced in 2003 by the Browning Arms Company, Winchester Ammunition, and Winchester Repeating Arms Company. The .223 designation is a reference to the popular .223 Remington. It is currently the fastest production .22 caliber round in the world with muzzle velocities as high as 4,600 feet per second (1,402 meters per second).
The major dimensional difference between the chambers that fire the .223 Remington and the 5.56×45mm NATO is the longer and larger-diameter "freebore" [3] in the 5.56 chamber (0.0566 in (1.44 mm) vs 0.0250 in (0.64 mm) length, 0.2265 in (5.75 mm) vs 0.2240 in (5.69 mm) diameter). Freebore is a short and smooth section of the barrel that is ...