The .45 ACP was designed by John Moses Browning in 1904 as a new cartridge for his Colt automatic pistol, a design that would eventually become the famed Model 1911. For anyone unfamiliar with Browning’s work, he is one of the most influential firearms designers in history. His designs form the foundation of many of … Continue reading 45 ACP: History, Ballistics, and Why It Still Matters