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Long Range Hunting & Shooting
Help calculating a BC from two speeds
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<blockquote data-quote="aroshtr" data-source="post: 167851" data-attributes="member: 9176"><p>Thanks for the replys guys. Royinidaho. I might not have made it clear, my starting position for the chronograph was at about 10 feet not yards. this might change the results you get.</p><p> </p><p>Jon, I was guessing that it was a corrected pressure as well, but was still not quite sure how to apply it. I am thinking your 5.16-5.23 is right. I couldn't believe that the .575-.585 numbers I was getting could be right.</p><p> </p><p>milanuk, you helped me clear up the corrected/uncorrected values. I will double check to verify, but the pressure I got was probably the corrceted pressure. My question is now this... The station pressure was at about 3400'asl, while I was shooting at 3680'asl. Is there a way to correct for the elevation difference, or am I better off to just use the box "standard conditions at altitude" box? </p><p> </p><p>Does it really just complicate things to try an deal with this pressure issure? and Is it "close enough" to just use the standard conditions box?</p><p> </p><p>I am also getting the idea that I might be better off to just wait till I can shoot at 800 yards or so, and plug in the BC that gives me the correct marks. I just though that this would be a quicker way to get the same result. Wat do the majority of you guys think? Shooting or Chronographing?</p><p> </p><p>Thanks for your help!!</p><p> </p><p>Joel</p></blockquote><p></p>
[QUOTE="aroshtr, post: 167851, member: 9176"] Thanks for the replys guys. Royinidaho. I might not have made it clear, my starting position for the chronograph was at about 10 feet not yards. this might change the results you get. Jon, I was guessing that it was a corrected pressure as well, but was still not quite sure how to apply it. I am thinking your 5.16-5.23 is right. I couldn't believe that the .575-.585 numbers I was getting could be right. milanuk, you helped me clear up the corrected/uncorrected values. I will double check to verify, but the pressure I got was probably the corrceted pressure. My question is now this... The station pressure was at about 3400'asl, while I was shooting at 3680'asl. Is there a way to correct for the elevation difference, or am I better off to just use the box "standard conditions at altitude" box? Does it really just complicate things to try an deal with this pressure issure? and Is it "close enough" to just use the standard conditions box? I am also getting the idea that I might be better off to just wait till I can shoot at 800 yards or so, and plug in the BC that gives me the correct marks. I just though that this would be a quicker way to get the same result. Wat do the majority of you guys think? Shooting or Chronographing? Thanks for your help!! Joel [/QUOTE]
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Help calculating a BC from two speeds
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