The .45 Colt (11.43×33mmR), often called the .45 Long Colt, is a rimmed straight-walled handgun cartridge dating to 1872. It was originally a black-powder revolver round developed for the Colt Single Action Army revolver.

Jan 27, 2021 · In this article, we’ll take you through the ins and outs of the .45 Colt (and its siblings). We’ll dive into why you might choose it and even some tips for how to load it, if you’re into that sort of thing. Ultimately you’ll walk away better acquainted with the round.

No, 45 Colt and 45 Long Colt are not the same cartridges. 45 Colt is a straight-walled cartridge with a rim diameter of 0.451 inch and a case length of 1.25 inches. 45 Long Colt is a tapered cartridge with a rim diameter of 0.472 inch and a case length of 1.54 inches.

The .45 Colt, sometimes called the .45 Long Colt to distinguish it from the short .45 cartridge historically required by the S&W Schofield revolver, as well as the .45 ACP (also sometimes, incorrectly, referred to as the .45 Colt), is the oldest service cartridge still in use today.

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Jul 24, 2021 · Both the revolver—the 1873 Colt Single Action Army (SAA) —and its cartridge, the .45 Colt, would become iconic in the annals of firearm development. The .45 Colt retains the bullet diameter of...