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Long Range Hunting & Shooting
Help with drop chart
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<blockquote data-quote="adam" data-source="post: 2591369" data-attributes="member: 9382"><p>Your actual BC can change with twist rate and velocity. I had a long chat with a Hornaday engineer one time about their 180gr eld. In my rifle with a 9.5 twist at 2850 he estimated my bc would be in the high 6's. That estimate is very close to the actual performance I am getting with 180 vld's. </p><p></p><p>If I were to re-barrel with a 7.5-8 twist he estimated the high velocity band might get as much as .810 (I don't remember the G7 BC equivalent but I do use it.)</p><p></p><p>He speculated my 180 vld's would probably have a similar result as the profiles are similar.</p></blockquote><p></p>
[QUOTE="adam, post: 2591369, member: 9382"] Your actual BC can change with twist rate and velocity. I had a long chat with a Hornaday engineer one time about their 180gr eld. In my rifle with a 9.5 twist at 2850 he estimated my bc would be in the high 6's. That estimate is very close to the actual performance I am getting with 180 vld's. If I were to re-barrel with a 7.5-8 twist he estimated the high velocity band might get as much as .810 (I don't remember the G7 BC equivalent but I do use it.) He speculated my 180 vld's would probably have a similar result as the profiles are similar. [/QUOTE]
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