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Calhoon cartridges : ウィキペディア英語版 | Calhoon cartridges
Calhoon cartridges are a class of .19 caliber cartridges created by James Calhoon, a firearms designer with an interest in that bore size. Calhoon began working with .19 caliber after his interest was piqued from learning about British sub-caliber rifle trials in the early 1970s. .19 caliber rifles have thicker rifling than .17 and .20 caliber rifles, which helps the barrel stay clean longer and improves barrel life.〔(19 Caliber at Calhoon )〕 ==Variants==
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「Calhoon cartridges」の詳細全文を読む
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