40 S&W Ammunition Tests: Black Hills 155s Are Best Buy

The history of American 10mm service cartridges is a bit strange. We began with the right idea, got off on a tangent, and returned to the right idea. The right idea is a short-case 40-caliber cartridge suitable for use in handguns previously deemed 9mm sized. The premise of a .400-inch bullet in a moderately sized handgun was begun with the 40 Guns & Ammo round about 1972. A Browning Hi-Power 9mm was converted to fire a special short-case cartridge made by shortening a rifle case and fitting on it a 180-grain bullet. The result had a velocity of about 1000 fps. The bullet used was the same diameter as the…