The .300 Winchester Magnum, known as the .300 Win Mag, is a big, bad magnum power cartridge. Its metric dimensions are 7.62x67mm. That makes it 23.8% bigger than the popular .308 Winchester at 7.62x51mm, and 6.3% bigger than the .30-06 at 7.62x63mm. It uses the same bullets as the .308 and .30-06, but it pushes […]