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.25-25 Stevens : ウィキペディア英語版 | .25-25 Stevens
The .25-25 Stevens was an American centerfire rifle cartridge.〔 Designed by Capt. W. L. Carpenter, 9th U.S. Infantry,〔Barnes, p.74, ".25-21 Stevens".〕 in 1895,〔 the .25-25 Stevens was the company's first straight-cased cartridge.〔 It would be used in Stevens' single shot Model 44, as well as the Model 44½ rifles, 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 also suffered a "freakish"〔 appearance, due to its length to diameter ratio.〔 It was also found the usual black powder charge of the shorter, bottlenecked.〔Barnes, p.75, ".25-25 Stevens", & p.74, ".25-21 Stevens".〕 25-21 offered "practically the same ballistics" as in the .25-25. The switch to smokeless powder only exacerbated the problem, due to the small charge.〔 To cure this, handloaders use a mix of of bulk shotgun powder and of black powder, with bullets of between . ==References==
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