45 ACP

.45 ACP covers ammunition developed for the .45 Automatic Colt Pistol cartridge, introduced in the early twentieth century and adopted by the U.S. military in 1911. Designed for reliable function in semi-automatic pistols and effective performance at close range, the cartridge became a long-standing military, law enforcement, and civilian standard and remains widely produced today.

This category includes standard ball and FMJ loads, hollow point and defensive cartridges, +P variants, blanks, dummies, snap caps, experimental and specialty projectiles, and instructional or sectioned examples. Variations in bullet construction, case materials, primers, headstamps, and packaging reflect more than a century of continuous production and adaptation. The breadth of material makes this category particularly useful for collectors interested in military pistol development, law enforcement ammunition evolution, and the technical progression of one of the most influential handgun cartridges ever adopted.