450 Bushmaster Ammo For Sale

450 Bushmaster Ammo is a rifle cartridge developed by Tim LeGendre of LeMag Firearms, and licensed to Bushmaster Firearms International. The .450 Bushmaster is designed to be used in standard M16s and AR-15s, using modified magazines and upper receiver assemblies.

History

450 Bushmaster Ammo is descended from the Thumper concept popularized by 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. Inspired by this, LeGendre developed his .45 Professional cartridge,and later built and delivered an AR-15 in .45 Professional to Cooper.

Loadings and ballistics

The 450mm makes use of .452 in. bullets because the lower impact velocities and energies would not adequately expand the heavier jacketed .458 in. bullets.The cartridge is chambered in bolt-action rifles by Ruger, Savage, Mossberg, and Remington, Ruger’s No. 1 single shot rifle, AR-15 rifles, as well as an AR-15 pistol b

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