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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
ballistic coefficient on bullets
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<blockquote data-quote="goodgrouper" data-source="post: 131215" data-attributes="member: 2852"><p>Well, the best way to measure bc is with Doppler radar but unfortunately, most folks don't have access to a multi-million dollar facility. /ubbthreads/images/graemlins/frown.gif So, I use a combination of the two methods already mentioned. I set up two chronos and get a difference in velocity and then plug it into the program and my real bc is calculated. Then i test it at multiple ranges and "backdoor approach" the ballistic program chart until it matches my real world drops. Usually, because of atmospheric conditions and wind being impossible to control or predict, the two chrono method provides about 75% of the trust I have in the number. The shooting makes up the remaining 25% and serves as a "proof" for my initial results. That is, until I can find 1000 yards of wire and run an Oehler 43 acoustic screen out to the target!</p></blockquote><p></p>
[QUOTE="goodgrouper, post: 131215, member: 2852"] Well, the best way to measure bc is with Doppler radar but unfortunately, most folks don't have access to a multi-million dollar facility. [img]/ubbthreads/images/graemlins/frown.gif[/img] So, I use a combination of the two methods already mentioned. I set up two chronos and get a difference in velocity and then plug it into the program and my real bc is calculated. Then i test it at multiple ranges and "backdoor approach" the ballistic program chart until it matches my real world drops. Usually, because of atmospheric conditions and wind being impossible to control or predict, the two chrono method provides about 75% of the trust I have in the number. The shooting makes up the remaining 25% and serves as a "proof" for my initial results. That is, until I can find 1000 yards of wire and run an Oehler 43 acoustic screen out to the target! [/QUOTE]
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ballistic coefficient on bullets
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