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Long Range Hunting & Shooting
Tweaking bc’s
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<blockquote data-quote="azsugarbear" data-source="post: 2253218" data-attributes="member: 4809"><p>To answer your question, I have had to modify my BC's anywhere from 0.2 to 0.4. But this was back in the old days when we were still using the G1 BC instead of the more accurate G7 BC used for VLD bullets. However, this modification was done only after verifying items mentioned above: (1) scope is tracking true MOA (measure at least 20 moa up on a target using a plumb line); (2) making sure your zero is exact and not hitting 1/8" high or low (if it is, then you need to compensate for that in your data input). These are the two biggest culprits, but there are more as mentioned above. When you tweak the BC, you will most likely find that the new solution will have you hitting a little high in the 400-600 yds range (assuming 200 yd zero) and a little low beginning around 1000 yds. Although it may be a little off, it will not make any difference as you will still be well within the kill zone of you animal.</p></blockquote><p></p>
[QUOTE="azsugarbear, post: 2253218, member: 4809"] To answer your question, I have had to modify my BC's anywhere from 0.2 to 0.4. But this was back in the old days when we were still using the G1 BC instead of the more accurate G7 BC used for VLD bullets. However, this modification was done only after verifying items mentioned above: (1) scope is tracking true MOA (measure at least 20 moa up on a target using a plumb line); (2) making sure your zero is exact and not hitting 1/8" high or low (if it is, then you need to compensate for that in your data input). These are the two biggest culprits, but there are more as mentioned above. When you tweak the BC, you will most likely find that the new solution will have you hitting a little high in the 400-600 yds range (assuming 200 yd zero) and a little low beginning around 1000 yds. Although it may be a little off, it will not make any difference as you will still be well within the kill zone of you animal. [/QUOTE]
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