Cartridge of the Day: 45 Auto/ACP

The .45 ACP (Automatic Colt Pistol) cartridge, often abbreviated as .45 Auto, was developed by John Browning in 1904 for use in his prototype Colt semi-automatic pistol. It was later adopted by the U.S. military with the M1911 pistol in 1911. The .45 ACP is a rimless, straight-walled handgun cartridge that is well-regarded for its stopping power, moderate recoil, and effectiveness in self-defense, law enforcement, and military applications.

It typically fires a 230-grain bullet at a velocity of around 830 feet per second. The cartridge is known for its large diameter and heavy bullet, contributing to its effectiveness in close-quarter situations. It remains popular for various uses, including personal defense, competitive shooting, and as a duty round for law enforcement officers. The .45 ACP is compatible with a wide range of pistols and submachine guns, and it has a storied history influencing its continued use today.

Image and description courtesy of Lee Precision

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