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45 Long Colt Ammo
The .45 Colt 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 also 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. Colt pistols chambered in .45 Colt could use .45 Schofield ammunition. This is still the quintessential Cowboy Action Single Action and Levergun caliber of choice for most of those classic weapons. And yes, this was one of the original "cowboy concept" calibers meaning having one caliber of ammo for both your longgun as well as your primary sidearm.