The .45 Colt, also known as the .45 Long Colt, is a revolver cartridge that was introduced in 1872. Originally designed for the Colt Single Action Army revolver, it has a bullet diameter of .452 inches and is known for its powerful performance and versatility. The cartridge is popular for both target shooting and hunting due to its effective stopping power. Over the years, the .45 Colt has been used in various firearms, including modern revolvers and lever-action rifles. Its historical significance and continued popularity make it a favorite among firearms enthusiasts and collectors. The cartridge is often loaded with different bullet weights and types, allowing for a range of applications.