45 Long Colt
The .45 Colt [11.48x35R] cartridge is a handgun cartridge dating to 1872. It began as a black-powder revolver round developed for the Colt Single Action Army revolver, but is offered as a magnum-level, handgun hunting round in modern usage. This cartridge was adopted by the U.S. Army in 1873 and served as the official US military handgun cartridge for 19 years. It is sometimes referred to as .45 Long Colt or .45LC, to differentiate it from the shorter .45 Schofield, as both were used by the Army at the same period of time.