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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
spin drift
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<blockquote data-quote="Michael Eichele" data-source="post: 250059" data-attributes="member: 1007"><p>The calculations I use are very long and complicated. I have them written into a program that I use to calculate SF.</p><p></p><p>If you reply with bullet lengths, diameters, twists AND velocity I can shoot you a very very close SF.</p><p></p><p>If you have access to MS EXCEL you can copy and paste the formula into any cell for the results.</p><p></p><p></p><p> =(1.500*2)*(1.3101)^2</p><p></p><p>The number 1.500 you will replace with your actual SF. And 1.3103 will be replaced with your actual flight time at any given range.</p></blockquote><p></p>
[QUOTE="Michael Eichele, post: 250059, member: 1007"] The calculations I use are very long and complicated. I have them written into a program that I use to calculate SF. If you reply with bullet lengths, diameters, twists AND velocity I can shoot you a very very close SF. If you have access to MS EXCEL you can copy and paste the formula into any cell for the results. =(1.500*2)*(1.3101)^2 The number 1.500 you will replace with your actual SF. And 1.3103 will be replaced with your actual flight time at any given range. [/QUOTE]
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