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The .45 ACP (Automatic Colt Pistol), also known as .45 Auto, .45 Automatic, or 11.43×23mm [1] is a rimless straight-walled handgun cartridge designed by John Moses Browning in 1904, for use in his prototype Colt semi-automatic pistol.
.45 ACP.45 Schofield.45 Colt.45 Auto Rim United States: 2011 Smith & Wesson M&P: Smith & Wesson: FN 5.7×28mm 9×19mm Parabellum 10mm Auto.22 LR.22 WMR.30 Super Carry.357 SIG.380 ACP.40 S&W.45 ACP United States: 2005 Smith & Wesson Model 22: Smith & Wesson.45 ACP.45 Auto Rim.45 GAP United States: 1917 Smith & Wesson Model 25: Smith & Wesson.45 ...
The 1991–2001 model used a large "M1991A1" roll mark engraved on the slide. The 2001 model introduced a new "Colt's Government Model" roll mark engraving. The 1991 series incorporates full-sized blued and stainless models in either .45 ACP or .38 Super, as well as blued and stainless Commander models in .45 ACP. [citation needed]
Essentially, the .45 Super is based on a .451 Detonics [2] case trimmed to .45 ACP length. Pioneered by writers Dean Grennell and the late Tom Ferguson, the .45 Super raised the performance level for .45 ACP-chambered autos beyond that of the .45 ACP+P and even the 10mm Auto .
The S&W revolver used the .45 Schofield, a shorter cartridge, which would also work in the Colt, however the Army's S&W Schofield revolvers could not chamber the longer .45 Colt, [2] so in 1874 Frankford Arsenal, then almost exclusive supplier of small arms ammunition to the U.S. Army, dropped production of the .45 Colt cartridge in favor of ...
Although not originally designed for handguns, several rifle and shotgun cartridges have also been chambered in a number of large handguns, primarily in revolvers like the Phelps Heritage revolver, Century Arms revolver, Thompson/Centre Contender break-open pistol, Magnum Research BFR, and the Pfeifer Zeliska revolvers.
Consequently, firearms that fire .460 S&W are usually capable of firing the less powerful .454 Casull, .45 Colt, and .45 Schofield rounds, but this must be verified with each firearm's manufacturer (most lever-action firearms can only feed cartridges within a certain overall length and bullet profile range). The reverse, however, does not apply ...
To rule out such a dangerous possibility, Grennell chose to use brass formed from the stronger and more modern .451 Detonics, [1] shortened to the overall length of the .45 ACP design. [2] Support for the case head was also addressed by adopting a new chamber and barrel design which supports the base area of the case. [ 6 ]