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.44 Colt
The .44 Colt was an American centerfire revolver cartridge produced commercially from 1871 until the 1940s.〔Barnes, p.169, ".44 Colt".〕
==History==
The cartridge was developed for the United States Army,〔 and introduced by Colt's Patent Firearms around 1871. The Army used it until 1873,〔 at which time it was replaced by the better known .45 Long Colt cartridge used in the recently adopted Colt Single Action Army revolver.
The .44 Colt was used in the Richards-Mason conversions of Colt's 1860 Army percussion revolver.〔 The conversion process involved boring through the chambers of the obsolete cap and ball revolvers to enable them to chamber centerfire metallic cartridges.
This process left a chamber of uniform diameter, with no step at the front. Thus the bullet and the brass case were made the same diameter, with a short "heel" section at the base of the bullet of smaller diameter to inserted in the mouth of the case.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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