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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300wm twist
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<blockquote data-quote="RockyMtnMT" data-source="post: 1469154" data-attributes="member: 7999"><p>Exactly. You can almost say the rpm at the muzzle is the same down range. Not quite but pretty close.</p><p></p><p>We figured out that testing with reduced loads we have to use increased twist rate in order to get the rpm high enough for a valid test. Impact testing a bullet in media at 1800fps or lower from a starting muzzle vel of 3300fps is a stellar feat. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite11" alt=":rolleyes:" title="Roll Eyes :rolleyes:" loading="lazy" data-shortname=":rolleyes:" /><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek! :eek:" loading="lazy" data-shortname=":eek:" /></p><p></p><p>Steve</p></blockquote><p></p>
[QUOTE="RockyMtnMT, post: 1469154, member: 7999"] Exactly. You can almost say the rpm at the muzzle is the same down range. Not quite but pretty close. We figured out that testing with reduced loads we have to use increased twist rate in order to get the rpm high enough for a valid test. Impact testing a bullet in media at 1800fps or lower from a starting muzzle vel of 3300fps is a stellar feat. :rolleyes::eek: Steve [/QUOTE]
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Rifles, Bullets, Barrels & Ballistics
300wm twist
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