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Fighting between the big-round and small-round groups reached a peak in the early 1960s, when test after test showed the .223 Remington (M193 5.56×45mm) cartridge fired from the AR-15 allowed an eight-soldier unit to outgun an 11-soldier unit armed with M14s at ranges closer than 300 meters.
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]
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 ...
5.56×45mm NATO (.223 Remington) of the M16 assault rifle and M4 carbine; 5.8×42mm cartridge of the QBZ-95 assault rifle.30 Carbine (7.62×33mm) cartridge of the US M2 select fire carbine and M1 semi-automatic carbine [18].345 Winchester Self-Loading of the Winchester-Burton M1917 automatic rifle
SSA 7.62mm 143gr AP rifle cartridge, bullet. The 7.62 mm caliber is a nominal caliber used for a number of different cartridges.Historically, this class of cartridge was commonly known as .30 caliber, the equivalent in Imperial and United States Customary measures.
The 7.62×39mm (aka 7.62 Soviet, formerly .30 Russian Short) [5] round is a rimless bottlenecked intermediate cartridge of Soviet origin. The cartridge is widely used due to the global proliferation of the AK-47 rifle and related Kalashnikov rifles, the SKS semi automatic rifle, as well as the RPD and RPK light machine guns.
.223 Remington 5.56×45mm NATO.223 Wylde.300 BLK.308 Win 7.62×51mm NATO 6.5mm Creedmoor United States 2024 Dragunov SVU: Central Design Research Bureau of Sporting and Hunting Arms 7.62×54mmR Russia 1994 DSR-Precision GmbH DSR-1: DSR-precision GmbH .308 Winchester.300 Winchester Magnum.338 Lapua Magnum Germany 2000 DSR-50: DSR-precision GmbH
Produced in .223 Rem/5.56 NATO, .243 Win, .308 Win and .30-06 Springfield. In Finland there are also series of a bullpup aftermarket modification chambered in 9.3×62mm . Valmet Petra/Hunter M/88 – modified version of the Valmet Petra, with a push safety replacing the Kalashnikov-type selector lever, and a different sight layout (front sight ...