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Bullets precisely split in half
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なぜ銃弾の先端は丸いのでしょうか?鋭角にとがっていた方が速そうだし貫きやすそうです。 - Quora
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なぜ銃弾の先端は丸いのでしょうか?鋭角にとがっていた方が速そうだし貫きやすそうです。 - Quora
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