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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
90 gr. Swift Scirocco
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<blockquote data-quote="Beng" data-source="post: 688539" data-attributes="member: 37512"><p><a href="http://www.outdoorsupplies.co.nz/projectiles_swift.html#scirocco" target="_blank">This website</a> says the bullet is 1.132" in length.</p><p>Using the <a href="http://www.jbmballistics.com/cgi-bin/jbmstab-5.1.cgi" target="_blank">jbm stability</a> calculator, I get a minimum twist rate of 8.5" per revolution at sea level for 3000f/s mv.</p><p>The Applied Ballistics point mass solver agrees.</p></blockquote><p></p>
[QUOTE="Beng, post: 688539, member: 37512"] [URL="http://www.outdoorsupplies.co.nz/projectiles_swift.html#scirocco"]This website[/URL] says the bullet is 1.132" in length. Using the [URL="http://www.jbmballistics.com/cgi-bin/jbmstab-5.1.cgi"]jbm stability[/URL] calculator, I get a minimum twist rate of 8.5" per revolution at sea level for 3000f/s mv. The Applied Ballistics point mass solver agrees. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
90 gr. Swift Scirocco
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