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Velocity Calibration
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<blockquote data-quote="Barrelnut" data-source="post: 1207171" data-attributes="member: 74902"><p>Just a couple thoughts. In the original post the errors started at 700 yards. The further you shoot, the faster the errors start to compound themselves. Maybe this is why you have issues at 700 and 980 but not at 519.</p><p></p><p>Ran the numbers thru shooter with a 140 A-MAX at 2719 FPS. The difference between 695 yards and 705 yards is exactly 1 MOA. Maybe the target is not exactly 700 yards? The bullet is dropping fast at that distance and a small error in the measured distance will start to show up.</p><p></p><p>Also, the error on your scope is 5%. At 700 yards that is 3/4 MOA. With the shooter app you can adjust that error out. Would be a good idea to try and do that. So 1/4 MOA of distance measurement error and 3/4 MOA scope dialing error and look where we are at. 1 MOA high. Throw the possibility of some slight vertical mirage in there and things could get even crazier at 900.</p><p></p><p>Also, my Vortex PST had less than 1% error at 24 MOA. That's quite a difference between our scopes...</p></blockquote><p></p>
[QUOTE="Barrelnut, post: 1207171, member: 74902"] Just a couple thoughts. In the original post the errors started at 700 yards. The further you shoot, the faster the errors start to compound themselves. Maybe this is why you have issues at 700 and 980 but not at 519. Ran the numbers thru shooter with a 140 A-MAX at 2719 FPS. The difference between 695 yards and 705 yards is exactly 1 MOA. Maybe the target is not exactly 700 yards? The bullet is dropping fast at that distance and a small error in the measured distance will start to show up. Also, the error on your scope is 5%. At 700 yards that is 3/4 MOA. With the shooter app you can adjust that error out. Would be a good idea to try and do that. So 1/4 MOA of distance measurement error and 3/4 MOA scope dialing error and look where we are at. 1 MOA high. Throw the possibility of some slight vertical mirage in there and things could get even crazier at 900. Also, my Vortex PST had less than 1% error at 24 MOA. That's quite a difference between our scopes... [/QUOTE]
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