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Rifles, Reloading, Optics, Equipment
Equipment Discussions
LabRadar question
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<blockquote data-quote="entoptics" data-source="post: 1642708" data-attributes="member: 104268"><p>That's how I'd do it. I use the specific <a href="http://www.jbmballistics.com/cgi-bin/jbmbcv-5.1.cgi" target="_blank">JBM B.C. Calculator (Velocity)</a> to get the real B.C., then input into the regular ballistics calculator for drop data.</p><p></p><p>I've checked the BC on a several bullets, and only the Nosler Accubond deviated significantly from the advertised value. I think the usefulness is for bullets that don't have an advertised B.C., or for calibers that drive the bullets significantly faster or slower than "average". If you're shooting 208s in a 308 for instance, the advertised B.C. was probably listed for a much faster round, and therefore it's worth figuring it out for your particular load.</p></blockquote><p></p>
[QUOTE="entoptics, post: 1642708, member: 104268"] That's how I'd do it. I use the specific [URL='http://www.jbmballistics.com/cgi-bin/jbmbcv-5.1.cgi']JBM B.C. Calculator (Velocity)[/URL] to get the real B.C., then input into the regular ballistics calculator for drop data. I've checked the BC on a several bullets, and only the Nosler Accubond deviated significantly from the advertised value. I think the usefulness is for bullets that don't have an advertised B.C., or for calibers that drive the bullets significantly faster or slower than "average". If you're shooting 208s in a 308 for instance, the advertised B.C. was probably listed for a much faster round, and therefore it's worth figuring it out for your particular load. [/QUOTE]
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