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Hunting
Long Range Hunting & Shooting
Need help with "true velocity" for a drop chart
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<blockquote data-quote="kudu" data-source="post: 533223" data-attributes="member: 33731"><p>Problem solved! It was the scope. I went shooting yesterday and was getting good data (although I had to re-zero as the scope was off about an 1/2 moa at 200 yards. Pulled out the chrony. Then shot 350 and 465 yards. The chrony and calculated velocities were close (off by about 50 fps). Close enough that I was feeling good. Then pulled up at 750 yards and using the numbers obtained nailed a 4" target! Then shot again 3 times and completely miss the 18x24" steel plate. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown :(" loading="lazy" data-shortname=":(" /> The gun wasn't dropped, miss handled or anything similar. I come back to 200 yards and I am 1 MOA high and 3 MOA to the left. </p><p> Came home and removed scope and epoxied the bases down, and remount. Today it shoots decent groups (just under MOA) and it was consistent through all ranges and the calculated velocities are reproducible. </p><p> Thanks for the help.</p></blockquote><p></p>
[QUOTE="kudu, post: 533223, member: 33731"] Problem solved! It was the scope. I went shooting yesterday and was getting good data (although I had to re-zero as the scope was off about an 1/2 moa at 200 yards. Pulled out the chrony. Then shot 350 and 465 yards. The chrony and calculated velocities were close (off by about 50 fps). Close enough that I was feeling good. Then pulled up at 750 yards and using the numbers obtained nailed a 4" target! Then shot again 3 times and completely miss the 18x24" steel plate. :( The gun wasn't dropped, miss handled or anything similar. I come back to 200 yards and I am 1 MOA high and 3 MOA to the left. Came home and removed scope and epoxied the bases down, and remount. Today it shoots decent groups (just under MOA) and it was consistent through all ranges and the calculated velocities are reproducible. Thanks for the help. [/QUOTE]
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Need help with "true velocity" for a drop chart
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