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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
B.C. Variance
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<blockquote data-quote="Hunter" data-source="post: 22956" data-attributes="member: 371"><p>Could someone tell me what the best way is of allowing for the change in ballistic coefficients at the various velocities over long range for use in computer trajectory calculations?</p><p></p><p>For example, a given bullet has BC is .450 at 3100fps, .440 at 2400fps, and .372 at 1600fps. What BC value would one use for an accurate trajectory calculation for the entire range of velocities?</p><p></p><p>Do any of the software programs that are available allow for changing BC values or do they all make the calculations with just one value?</p><p></p><p>TIA</p></blockquote><p></p>
[QUOTE="Hunter, post: 22956, member: 371"] Could someone tell me what the best way is of allowing for the change in ballistic coefficients at the various velocities over long range for use in computer trajectory calculations? For example, a given bullet has BC is .450 at 3100fps, .440 at 2400fps, and .372 at 1600fps. What BC value would one use for an accurate trajectory calculation for the entire range of velocities? Do any of the software programs that are available allow for changing BC values or do they all make the calculations with just one value? TIA [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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B.C. Variance
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