Legendary American pistol cartridge with cult following. Known for stopping power and subsonic velocity. Served US military for 74 years.
Type: Pistol
Introduced: 1905, United States
Parent case: None
Standardization: SAAMI
Bullet diameter: 0.452" (11.48 mm)
Case length: 0.898" (22.81 mm)
Overall length: 1.275" (32.39 mm)
Max pressure: 21,000 PSI
Rim type: Semi-Rimmed
Primer: Large Pistol
Typical twist rate: 1:16
Muzzle velocity: 850–1000 fps
Muzzle energy: 350–450 ft-lbs
Effective range: 50 yd
Common bullet weights: 165, 185, 200, 230, 255 gr
Primary use: Self Defense, Military, Target, Competition
Production status: Active
Also known as: .45 Auto · 11.43x23mm
History: Designed by John Browning in 1905 for the Colt M1911 pistol. Adopted by US military in 1911. Replaced by 9mm in 1985 but remains extremely popular among enthusiasts and '1911 guys.'
Notable firearms: M1911, Springfield 1911, Glock 21, HK USP, Thompson SMG
Military use: {"country":"United States","years":"1911-1985","conflicts":["WWI","WWII","Korean War","Vietnam War"]}
Similar cartridges: 10mm Auto, .40 S&W