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2 bore Two bore or 2 bore is a mostly obsolete firearm caliber. == Specifications ==
An historical two bore fired spherical balls or slugs of hardened lead or, in the modern metallic cartridge, additionally a solid bronze projectile. The nominal bore is , and projectiles generally weigh 8 ounces (225 grams; 3500 grains). The velocity is relatively low, at around at the muzzle, but develops approximately muzzle energy.
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「2 bore」の詳細全文を読む
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