The original American frontier cartridge. Developed for the Colt Single Action Army and carried by cavalrymen, lawmen, and outlaws alike.
Type: Revolver
Introduced: 1872, United States
Parent case: None
Standardization: SAAMI
Bullet diameter: 0.452" (11.48 mm)
Case length: 1.285" (32.64 mm)
Overall length: 1.6" (40.64 mm)
Max pressure: 14,000 PSI
Rim type: Rimmed
Primer: Large Pistol
Typical twist rate: 1:16
Muzzle velocity: 750–1200 fps
Muzzle energy: 250–650 ft-lbs
Effective range: 100 yd
Common bullet weights: 200, 225, 250, 255, 300, 325 gr
Primary use: Cowboy Action, Hunting, Self-Defense
Production status: Active
Also known as: .45 Long Colt · .45 LC
History: Adopted by the U.S. Army in 1873 for the Colt Single Action Army revolver. Saw service throughout the Indian Wars and became synonymous with the American West. Remained the standard cavalry sidearm until replaced by .38 Long Colt in 1892.
Notable firearms: Colt Single Action Army, Winchester Model 1873, Ruger Vaquero
Military use: {"country":"U.S. Army","years":"1873-1892"}
Similar cartridges: .44 Magnum, .454 Casull