These solid-silver bullets are nearly identical to a real .45 cartridge. Weighing 1 Troy Oz, each, the .45 ACP version of Silver Bullet Bullion won't actually fire in a weapon, but will target your financial goals with devastating power. Pure investment-grade .999-fine silver, available in boxes of 10 or individually. Celebrates the cartridges designed by John Browning in 1904 for use in his Colt semi-automatic .45 pistol.