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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
PRL bullets
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<blockquote data-quote="Guest" data-source="post: 27030"><p>I can tell you exactly what the older line B.C.'s are but this will change as the new technology comes on line and the denser core tech is utilized.</p><p> </p><p>The old 87 gr. .224 ran at .530</p><p> </p><p>200 gr. 30 cal starts at .675 and increases to .720 over distance.</p><p> </p><p>253 gr. 30 cal starts at .870 and increases up to .910 over distance.</p><p> </p><p>Keep in mind the true beauty of this technology is not B.C. but real world wind deflection. You can always make a bullet's B.C. higher by making it longer. Unfortunately a longer bullet just increases the rear drag in a crosswind component which has a huge impact on actual wind deflection. By making the bullet denser, you need less rpm to stabilize it, it brings the CP closer to the CG, and you see major improvement in actual wind deflection performance. The flight time models that are written into the current software programs will be useless with this new technology. They will way overestimate the true wind deflection of these denser bullets. The rules are about to change. <img src="http://images/icons/grin.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /> <img src="http://images/icons/grin.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /> <img src="http://images/icons/grin.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="Guest, post: 27030"] I can tell you exactly what the older line B.C.'s are but this will change as the new technology comes on line and the denser core tech is utilized. The old 87 gr. .224 ran at .530 200 gr. 30 cal starts at .675 and increases to .720 over distance. 253 gr. 30 cal starts at .870 and increases up to .910 over distance. Keep in mind the true beauty of this technology is not B.C. but real world wind deflection. You can always make a bullet's B.C. higher by making it longer. Unfortunately a longer bullet just increases the rear drag in a crosswind component which has a huge impact on actual wind deflection. By making the bullet denser, you need less rpm to stabilize it, it brings the CP closer to the CG, and you see major improvement in actual wind deflection performance. The flight time models that are written into the current software programs will be useless with this new technology. They will way overestimate the true wind deflection of these denser bullets. The rules are about to change. [img]images/icons/grin.gif[/img] [img]images/icons/grin.gif[/img] [img]images/icons/grin.gif[/img] [/QUOTE]
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