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g7 bc vs g1 bc
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<blockquote data-quote="Greyfox" data-source="post: 573030" data-attributes="member: 10291"><p>My experience with my 6.5x284 shooting 140VLD's has been that my actual POI between 600 and 1000 yards just about matches my ballistics program using G7 compared to impact points that are high using G1. This has been the case with two different rifles in this caliber. If I use G1, I have to make a correction to BC, velocity, or both to match up. This makes sense to me since i understand the G7 formula was developed for use with the VLD design. In your case, I'm not sure this is relevant since the bullet your using is not a VLD design. The G1 program should work. It's possible though the BC or velocity in your set up is off. When all is said and done though, I always use my actual impact info to develop my drop chart.</p></blockquote><p></p>
[QUOTE="Greyfox, post: 573030, member: 10291"] My experience with my 6.5x284 shooting 140VLD's has been that my actual POI between 600 and 1000 yards just about matches my ballistics program using G7 compared to impact points that are high using G1. This has been the case with two different rifles in this caliber. If I use G1, I have to make a correction to BC, velocity, or both to match up. This makes sense to me since i understand the G7 formula was developed for use with the VLD design. In your case, I'm not sure this is relevant since the bullet your using is not a VLD design. The G1 program should work. It's possible though the BC or velocity in your set up is off. When all is said and done though, I always use my actual impact info to develop my drop chart. [/QUOTE]
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