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The 9mm Steyr is a centerfire pistol cartridge originally developed for the Steyr M1912 military pistol. Adopted in 1912, this was the service ammunition for most branches of the military in Austria-Hungary during World War I and remained the service ammunition for Austria, Romania and Chile between the World Wars.〔 *Wilson, R. K. ''Textbook of Automatic Pistols'', p.235. Plantersville, S.C.: Small Arms Technical Publishing Company, 1943.〕 Some MP 34 submachine guns were also issued in this caliber in addition to 9mm Mauser. When the Austrian Army was incorporated in the Wehrmacht in 1938 following the Anschluss, many M1912 pistols and MP 34 submachine guns were rebarrelled to 9mm Parabellum for standardization purposes. It is similar to the 9×23mm Largo cartridge in performance, but their dimensions are just different enough to make them non-interchangeable. The cartridge headspaces on the mouth of the case. Its performance is close to that of the .38 ACP. It is unrelated to the modern 9×23mm Winchester. Reloadable cartridge cases can be made from 5.56mm NATO, by trimming them to the proper length, but this also requires inside reaming of the case mouths to reduce the thickness of the brass. ==References== 〔 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「9×23mm Steyr」の詳細全文を読む スポンサード リンク
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