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The Basics, Starting Out
RPM formula
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<blockquote data-quote="CatShooter" data-source="post: 52210" data-attributes="member: 7"><p>Divide the number 12 by the twist in inches, take that answer, and multiply by the muzzle velocity (fps), and multiply by 60.</p><p></p><p>The answer is in "RPM"</p><p></p><p>CatShooter.</p></blockquote><p></p>
[QUOTE="CatShooter, post: 52210, member: 7"] Divide the number 12 by the twist in inches, take that answer, and multiply by the muzzle velocity (fps), and multiply by 60. The answer is in "RPM" CatShooter. [/QUOTE]
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