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Rifles, Reloading, Optics, Equipment
Reloading
Quick load help!! Bullet drop 300wsm
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<blockquote data-quote="SBruce" data-source="post: 701634" data-attributes="member: 21068"><p>I would seriously doubt those 3200+ velocities, but stranger things have happened. Am I understanding you correctly that you checked with a chronograph and got 2980?? If so, the problem lies elsewhere IMO. Because 2980 is reasonable for the load your shooting. Were you using the BDC, or dialing for distance? I will assume for a second you were dialing.</p><p> </p><p>The problem could be 3 part.</p><p> </p><p>1. Perhaps the true zero distance is a little further than input in the program, which would explain the impacts being high at 300 and even some at 400 yds. </p><p> </p><p>2. Perhaps your true velocity is slightly higher than input which would help explain some of the gap at 500 yds.</p><p> </p><p>3. Perhaps the scope clicks are slightly more than advertised. I've seen this countless times, and that would explain the rest of the gap at 500. </p><p> </p><p>Had you done a 2shot dial, 2shot dial some more, 2shot dial some more and actually measured the distances between each group at 100 yds to confirm your scopes' adjustment values?</p><p> </p><p>4. You mentiond too much mirage to shoot beyond 500. Mirage plays it's own games and can sometimes make the target appear higher than it is (resulting in a higher hold), especially if it's calm and sunny and the mirage is boiling strait up.</p><p> </p><p>If were me, I'd double check the velocity with another chronograph and do the shoot2 and dial test. It's possible that you'll discover your adjustments are not as advertised and then you'll know the true value per click for drawing up a new drop chart.</p></blockquote><p></p>
[QUOTE="SBruce, post: 701634, member: 21068"] I would seriously doubt those 3200+ velocities, but stranger things have happened. Am I understanding you correctly that you checked with a chronograph and got 2980?? If so, the problem lies elsewhere IMO. Because 2980 is reasonable for the load your shooting. Were you using the BDC, or dialing for distance? I will assume for a second you were dialing. The problem could be 3 part. 1. Perhaps the true zero distance is a little further than input in the program, which would explain the impacts being high at 300 and even some at 400 yds. 2. Perhaps your true velocity is slightly higher than input which would help explain some of the gap at 500 yds. 3. Perhaps the scope clicks are slightly more than advertised. I've seen this countless times, and that would explain the rest of the gap at 500. Had you done a 2shot dial, 2shot dial some more, 2shot dial some more and actually measured the distances between each group at 100 yds to confirm your scopes' adjustment values? 4. You mentiond too much mirage to shoot beyond 500. Mirage plays it's own games and can sometimes make the target appear higher than it is (resulting in a higher hold), especially if it's calm and sunny and the mirage is boiling strait up. If were me, I'd double check the velocity with another chronograph and do the shoot2 and dial test. It's possible that you'll discover your adjustments are not as advertised and then you'll know the true value per click for drawing up a new drop chart. [/QUOTE]
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Quick load help!! Bullet drop 300wsm
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