.45 Auto Rim

Revolver cartridge designed by the Peters Cartridge Company 45 Auto Rim comparison.jpg 300px On left: Two Remington UMC Auto Rim factory loads On right: Two Peters Cartridge Auto Rim factory loads .45 Auto Rim Revolver United States 1920 Peters Cartridge CompanyRemingtonCorbon 1920–present Rimmedhttp://www.municion.org/45ar/45ar.htm 45 Auto Rim - MUNICION.ORG 2012-03-01 https://web.archive.org/web/20170209011608/http://www.municion.org/45ar/45ar.htm 2017-02-09 dead 0.452 0.4685 0.4709 0.5154 0.0827 0.9004 1.2646 Large pistol 17400 CIP 15,000 160 JHP 1050 392 185 LRN 800 264 230 FMJ 855 375 230 FMJ 750 287 Taylor Chuck The .45 Auto Rim http://findarticles.com/p/articles/mi_m0BQY/is_9_46/ai_64259196/ Guns Magazine https://web.archive.org/web/20101029035009/http://findarticles.com/p/articles/mi_m0BQY/is_9_46/ai_64259196/ September 2000 usurped 9 46 29 October 2010 The .45 Auto Rim, also known as 11.5x23mmR, is a rimmed cartridge specifically designed to be fired in revolvers originally chambered for the .45 ACP cartridge. The Peters Cartridge Company developed the cartridge in 1920 for use in the M1917 revolver, large numbers of which had become available as surplus following the end of World War I.Ayoob Massad F. Massad Ayoob's Greatest Handguns of the World, Volume 2 Gun Digest Books 2012 41 Two issues related to the use of .45 ACP ammunition in the M1917 revolver led to the development of the .45 Auto Rim. The M1917 had previously been used with half-moon clips that held three rounds of .45 ACP, a rimless cartridge. But if half-moon or moon clips are not used when firing a rimless cartridge in a revolver, the spent cases must be ejected by hand—either by shaking the revolver and its swing-out cylinder or by poking the cases with a rod or field-expedient tool, like a pencil—as the revolver's extractor cannot grab them. The second issue concerned headspace. In revolver cylinders not engineered to allow .45 ACP to headspace properly, as in early production Colt M1917s, the cartridges could slip forward, stopping them from firing. Adding a rim to the .45 ACP cartridge solved both these issues.Corbon thumb|left|.45 Auto Rim/.45 ACP cartridge Loads offered were similar to the standard military loads for the .45 ACP, but with fully lead bullets rather than the full metal jacket bullets used for .45 ACP. This was done to reduce barrel wear in the shallow rifled revolvers in which it was to be used.The .45 Colt sucks! Heresy? Listen-up before you blow a gasket! Mike Venturino American Handgunner March–April 2005 https://findarticles.com/p/articles/mi_m0BTT/is_174_29/ai_n8968390/print https://web.archive.org/web/20080619091501/http://findarticles.com/p/articles/mi_m0BTT/is_174_29/ai_n8968390/print usurped 174 29 June 19, 2008 The round is currently still in production by Corbon in their DPXhttp://shopcorbon.com/corbon/dpx/dpx-handgun DPX Handgun shopcorbon.com 6 June 2022 https://web.archive.org/web/20151028002301/http://shopcorbon.com/corbon/dpx/dpx-handgun 28 October 2015 dead and Performance Match lines of ammunition and is also manufactured by Georgia Armshttp://georgia-arms.com/45autorim.aspx .45 AUTO RIM 2013-11-18 https://web.archive.org/web/20131121204026/http://georgia-arms.com/45autorim.aspx 2013-11-21 dead and Buffalo Bore Ammunition..45 Auto Rim Standard Pressure Pistol & Handgun Ammunition https://www.buffalobore.com/index.php?l=product_list&c=13 2021-07-20 www.buffalobore.com See also List of rimmed cartridges References Category:Pistol and rifle cartridges Category:Rimmed cartridges