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With normal bullet weights between 300 and 400 grains (19 and 26 g), overall cartridge length shorter than that of an AR-15 magazine well, and holding to pressures of 33,000 psi limited by the AR bolt strength system, [2] the .50 Beowulf is best described as a low-velocity, heavy caliber, making its ballistics roughly equivalent to those of ...
The .450 Bushmaster is descended from the Thumper concept popularized by the gun writer Jeff Cooper.Cooper was dissatisfied with the small-diameter 5.56×45mm NATO (.223 Remington) of the AR-15, and envisioned a need for a large bore (.44 cal or greater) cartridge in a semi-automatic rifle to provide one-shot kills on big-game animals at 250 yards.
However, the 50 Beowulf case is longer than the 50AE, so the 50AE cases cannot be used as a donor. Note about donor cases : The 7.62x51 military cartridge the civilian version is the .308 cartridge. Since its dimensions are taken from the 30-06 cartridge from the 1906 US Army cartridge, the lower half of these case dimensions have been used for ...
The 45 Raptor (11.5x46mm) is a rimless centerfire cartridge developed for the AR-10 semi-automatic rifle for medium and large game hunting. Compared to similar big bore cartridges designed for the AR-15 – such as the .450 Bushmaster, .458 SOCOM, and .50 Beowulf – the 45 Raptor offers higher velocity bullets, a flatter shooting trajectory and the ability to reliably feed hollow point ...
The .458 SOCOM (11.63×40mmRB) is a moderately large round designed to work in an AR-15 platform.This is achieved by installing a 458 bolt and barrel. The 300-grain (19 g) round offers a supersonic muzzle velocity of 1,900 ft/s (580 m/s) and 2,405 ft⋅lbf (3,261 J), [1] similar to a light .45-70 but with a much smaller case.
STANAG magazines loaded with .223 Rem (left) and .450 Bushmaster (right) Over the years different cartridges that fit into the STANAG magazine emerged, some rounds like .300 AAC Blackout have the same rim diameter as .223 Remington and only require a barrel change to be used in a firearms that was previously using in .223 Remington.
The 12.7×55mm cartridge is used in some Russian firearms such as the VKS bullpup sniper rifle, the ShAK-12 bullpup battle rifle and the RSh-12 revolver.The cartridge can carry a projectile weighing between from 108 grains and 1173 grains and is predominantly used to fire heavy subsonic loads.
Harold Johnson necked out the .348 Winchester case to accept a .510" diameter bullet, [2] and Harold Fuller developed the barrel, marrying a .50 caliber barrel to an old Winchester Model 1886 rifle. Harold Johnson made the first 450 Alaskan in 1952, and continued to make them in the 1950s and 60s. The rifle was based on the Winchester Model 71 ...