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.25-21 Stevens : ウィキペディア英語版 | .25-21 Stevens
The .25-21 Stevens was an American centerfire rifle cartridge.〔 Designed by Capt. W. L. Carpenter, 9th U.S. Infantry, in 1897,〔 the .25-21 was a bottlenecked round, based on the longer .25-25.〔 It was Stevens' second straight-cased cartridge (after the .25-25)〔Barnes, p.75, ".25-25 Stevens".〕 and would be used in the single shot Model 44 rifle, as well as the Model 44½, which first went on sale in 1903.〔 In addition, it was available in the Remington-Hepburn target rifle.〔 While the .25-25 was popular, the .25-21 offered "practically the same performance and was a little cleaner shooting."〔 It was also found the usual black powder charge of the shorter, bottlenecked .25-21 offered "practically the same ballistics" as in the .25-25. It was highly accurate, reputedly capable of generating groups at .〔 In power, the .25-21 was outpaced by the .25-20 WCF〔Barnes, p.20, ".25-20 WCF".〕 and .32-20 Winchester,〔Barnes, p.46, ".32-20 Winchester".〕 while today, even modern pistol rounds such as the .38 Super offer superior performance.〔Barnes, p.164, ".38 Colt Super Automatic".〕 ==Notes==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「.25-21 Stevens」の詳細全文を読む
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