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.450 Black Powder Express : ウィキペディア英語版 | .450 Black Powder Express
The .450 Black Powder Express also known as the .450 3¼-inch BPE was a popular black powder cartridge in the late 19th and early 20th century.〔 ==Development== In 19th century Britain there were a large number of straight .450 cartridges developed of varying case lengths up to the 3¼-inch version. The .450 3¼-inch Black Powder Express was developed in the 1870s and quickly became a very popular black powder sporting cartridge, manufactured in the UK, France, Germany, Austria and Canada.〔 The cartridge was readily available in both BP and Nitro for Black versions well into the 20th century,〔 and second hand rifles can still be obtained quite easily. The cartridge has survived to the current day as the .450 Nitro for Black, the same cartridge loaded with mild loadings of modern smokeless powder, carefully balanced through trial to replicate the ballistics of the Black powder version .〔
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「.450 Black Powder Express」の詳細全文を読む
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