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2,650 ft/s (810 m/s) 1,560 ft⋅lbf (2,120 J) The 6×45mm is a rimless, bottlenecked cartridge based on the .223 Remington or 5.56 NATO cartridge necked up to .243 (6mm). The cartridge is also known as the 6mm-223 Remington or 6mm/223.
The 6mm Advanced Rifle Cartridge (6×38mm), or 6mm ARC for short, is a 6 mm (.243) caliber intermediate rifle cartridge introduced by Hornady in 2020, as a low- recoil, high- accuracy long-range cartridge, designed for use in the M16 platform at request of a specialized group within the U.S. DoD for its multipurpose combat rifle program. [4]
The .223 Remington (designated 223 Remington by SAAMI [4] and 223 Rem. by the C.I.P. [5]) 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 small-caliber, high-velocity firearm.
.228 Ackley Magnum, an improved 7×57mm Mauser necked down to .228 caliber (5.8 mm); bullets in this size are hard to find but provide greater weight than .223 caliber bullets, up to 100 grains (6.5g), without excessively quick twist rate. 6mm AR Improved / 6mm AR Turbo, an improved 6mm AR (itself a necked-down 6.5mm Grendel).
Thompson/Center Ugalde. The Thompson/Center Ugalde, or TCU family of wildcat cartridges, was developed by Wes Ugalde of Fallon, Nevada, by necking up .223 Remington brass to accept larger bullets. The cartridges were developed for the Thompson Center Arms Contender single shot pistol, and are widely used in handgun metallic silhouette ...
The 6mm Remington rifle cartridge, originally introduced in 1955 by Remington Arms Company as the .244 Remington, is based on a necked down .257 Roberts cartridge (itself a necked-down 7×57mm Mauser) using a .24/6mm bullet. Known for a combination of high velocity, long range, flat trajectory, and accuracy, it is suitable as a dual use hunting ...
All sizes in millimeters (mm) plus Imperial (inches). The .222 Remington or 5.7×43mm (C.I.P), also known as the triple deuce, triple two, and treble two, is a centerfire rifle cartridge. Introduced in 1950, it was the first commercial rimless .22 (5.56 mm) cartridge made in the United States. As such, it was an entirely new design, without a ...
The 6mm Musgrave was a rifle cartridge invented by Ben Musgrave and introduced by Musgrave in 1969 [2][3] The cartridge's design is based on necking down the .303 British, with the original intent of it being a Springbok caliber for hunting on open plains in South Africa's Karoo, Kalahari and Namakwaland. It also served as a modern cartridge ...