![]() 260 Remington shoots best from a barrel with either a 1:8 or 1:9 rifling twist, and fires with a maximum pressure of nearly 60,000 PSI. 260 produces a muzzle velocity of around 2860 feet per second. 264 caliber bullet, and it has a case capacity of 53.5 grains. 308 Winchester as such, the rim diameter is the same, and it uses a large rifle primer. 260 Remington, gaining SAAMI standardization and thus, official recognition for the cartridge. ![]() 260 Remington can be converted to fire any of the aforementioned cartridges (.243 Win, 7mm-08 Rem. Because of this, and the similar overall length (OAL), any weapon chambered for the. 308 Winchester ammunition, or by necking up. It was often created by necking down 7mm-08 Remington or. 260 Remington started off as a wildcat cartridge - the 6.5-08. 308 Winchester as its parent cartridge the case is necked down to accept a. 260 Remington (.260 Rem, 6.5-08 A-square, 6.72×51.69mm) is an intermediate rifle cartridge which uses the.
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