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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
G1, G5, G7 curves. BC's, Drop, curves and putting it all together
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<blockquote data-quote="JBM" data-source="post: 31835" data-attributes="member: 1969"><p><strong>Re: G1, G5, G7 curves. BC\'s, Drop, curves and putting it all together</strong></p><p></p><p><BLOCKQUOTE><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><HR>Please explain how you got your corrected BC from G1 to G5 (EX..495bc @ G1 and .320bc @ G5)</p><p>Is there a formula?</p><p><HR></BLOCKQUOTE></p><p></p><p>Yes there is. I'm going from memory here, so take it with a grain of salt. You have to G5/BC5 = G1/BC1 so that BC5 = BC1*G5/G1 where G5 and G1 are the drag models calculated at the same mach number. This gives you a G5 BC at the mach number.</p><p></p><p> <BLOCKQUOTE><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><HR></p><p>Aslo MV? &gt;meaning Mach Velocity is that velocity divided by 1126? (Vel./1126)</p><p>Thanks for the help.</p><p><HR></BLOCKQUOTE></p><p></p><p>I thought that MV was muzzle velocity. Brent?</p></blockquote><p></p>
[QUOTE="JBM, post: 31835, member: 1969"] [b]Re: G1, G5, G7 curves. BC\'s, Drop, curves and putting it all together[/b] <BLOCKQUOTE><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><HR>Please explain how you got your corrected BC from G1 to G5 (EX..495bc @ G1 and .320bc @ G5) Is there a formula? <HR></BLOCKQUOTE> Yes there is. I'm going from memory here, so take it with a grain of salt. You have to G5/BC5 = G1/BC1 so that BC5 = BC1*G5/G1 where G5 and G1 are the drag models calculated at the same mach number. This gives you a G5 BC at the mach number. <BLOCKQUOTE><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><HR> Aslo MV? >meaning Mach Velocity is that velocity divided by 1126? (Vel./1126) Thanks for the help. <HR></BLOCKQUOTE> I thought that MV was muzzle velocity. Brent? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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G1, G5, G7 curves. BC's, Drop, curves and putting it all together
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