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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 ...
This article may lack conversion for SI units. Please add them to this article , preferably with {{ convert }} . Common rifle cartridges, from the largest .50 BMG to the smallest .22 Long Rifle with a $1 United States dollar bill in the background as a reference point.
Contact us; Contribute Help; Learn to edit; ... 7.22 Hornet, 8.223 Remington, 9.223 WSSM, 10.243 Winchester, 11.243 Winchester Improved (Ackley) ... Rim fire cartridges
Calibers fall into four general categories by size: [citation needed] miniature-bore historically refers to calibers with a diameter of 0.22 inches (5.6 mm) or smaller; small-bore refers to calibers with a diameter of 0.32 inches (8.1 mm) or smaller; medium-bore refers to calibers with a diameter of 0.33 inches (8.4 mm) to 0.39 inches (9.9 mm)
6.5mm Grendel :The Grendel uses the same head and rim from the .220 Russian and the 7.62x39 with a rim diameter of 0.441-0.449. The 6.5 Grendel bullets have a true diameter of 6.71mm / 0.264" and the 6.5 Grendel case can be formed from abundant 7.62x39 cases with a neck re-sizing die, and fire-forming a slight change to the shoulder, if the ...
This round is used in specialized AR-15 upper receivers, and the rim matches the size of the rim of the 7.62×39mm, allowing those parts to be used in the custom-built upper receivers. [8] Other rebated rifle cartridges include the .450 Bushmaster, .458 SOCOM, .500 Jeffery, and .375 SWISS P.