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Subsonic ammunition : ウィキペディア英語版 | Subsonic ammunition Subsonic ammunition is ammunition designed to operate at speeds less than the speed of sound, which avoids the bullet making a supersonic shockwave or "crack" as it travels. Particularly for suppressed or silenced firearms, the sound of a supersonic bullet will significantly add to the loudness of the shot. Subsonic ammunition usually uses heavier bullets, to retain as much energy and momentum as possible at the lower velocities. Some subsonic ammunition is used in non-suppressed firearms to gain the advantages of heavier bullet weights. ==Standard calibers==
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「Subsonic ammunition」の詳細全文を読む
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