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.500 Black Powder Express : ウィキペディア英語版 | .500 Black Powder Express
The .500 Black Powder Express was in fact a series of Black powder case of varying lengths that emerged in the 1860s.〔 ==Development== The cartridge was offered in several case lengths including 1½-inch, 2-inch, 2¼-inch, 2⅝-inch, 3-inch and 3¼-inch,several were successful and endured others lasted only a short period.〔 The 3-inch and 3¼-inch .500 BPE cartridges have survived to the current day as the .500 3-inch Nitro for Black and the .500 3¼-inch Nitro for Black, the same cartridges loaded with mild loadings of modern smokeless powder, carefully balanced through trial to replicate the ballistics of the Black powder version.〔 The two cartridges offer almost identical ballistic performance to each other, and are very similar to the .50-140 Sharps. The 3-inch and 3¼-inch cartridges were later loaded with smokeless cordite to create the .500 Nitro Express, with the 3-inch version becoming the most popular.
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「.500 Black Powder Express」の詳細全文を読む
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