Bishop Ammunition & Firearms has introduced the .475 Bishop Short Magnum cartridge back at SHOT Show 2019. It is a .474-caliber rebated rim proprietary cartridge designed to fit single stack in AR-10 pattern magazines and as stated by the company was (still probably is) the most powerful chambering for the AR-10 platform. At SHOT Show 2022, Bishop Ammunition & Firearms has unveiled another big-bore cartridge created by necking down the .475 BSM. Meet the .375 Bishop Short Magnum.

The .375 Bishop Short Magnum is capable of launching 235-grain .375-caliber bullets to a muzzle velocity of 2950 fps generating 4542 ft-lbs of muzzle energy. Actually, during the development of the cartridge, they were able to push these bullets to 3100 fps, but the commercial ammo will be loaded to 2950 fps. They will be offering .375 BSM ammunition loaded with Speer and Hawk 235-grain bullets. The company notes that the .375 Bishop Short Magnum is like a .375 Holland & Holland Magnum in an AR-10. If they could load 300-grain bullets (the most popular .375 H&H Magnum bullet weight) into this cartridge and make them travel to about 2550 fps, that would be really impressive.

Like its parent cartridge, the .375 Bishop Short Magnum has a rim diameter of .473″ which makes it possible to use standard .308 Win bolts when building firearms chambered in this cartridge. Bishop Ammunition & Firearms will be offering AR-10 pattern gas guns as well as bolt action rifles chambered in their new cartridge.

Other news of Bishop Ammunition & Firearms is that their big bore AR-10 pattern gas guns will also be available with carbon fiber wrapped barrels and their Remington 700 footprint actions have been improved.

For more information on the .375 Bishop Short Magnum cartridge and other new products of the company, visit their website: www.bishopammunition.com