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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Need a drop chart
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<blockquote data-quote="tlk" data-source="post: 359296" data-attributes="member: 11397"><p>I Used JBM and Big Game Info for shots at 400 yesterday. Everything worked out.</p><p> </p><p>BUT - I have question: Bigngreen, why did you use the BC of .409? Doumentation in Point Blank has a BC of .474, which is what I used. When I look at the JBM info I posted below I see that there are three different BC's (based on velocity, I assume, please correct if wrong). Based on what you found, I am wondering if this is where the difference I am seeing can be traced to.</p><p> </p><p>Is JBM calculating based on different BC's at different bullet speeds during flight?</p><p> </p><p>Thanks.</p></blockquote><p></p>
[QUOTE="tlk, post: 359296, member: 11397"] I Used JBM and Big Game Info for shots at 400 yesterday. Everything worked out. BUT - I have question: Bigngreen, why did you use the BC of .409? Doumentation in Point Blank has a BC of .474, which is what I used. When I look at the JBM info I posted below I see that there are three different BC's (based on velocity, I assume, please correct if wrong). Based on what you found, I am wondering if this is where the difference I am seeing can be traced to. Is JBM calculating based on different BC's at different bullet speeds during flight? Thanks. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Need a drop chart
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