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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
calculations 2moa off, need advice
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<blockquote data-quote="LouBoyd" data-source="post: 398884" data-attributes="member: 9253"><p>I ran some quickload and quicktarget simulations to see if I could figure out where the 2MOA difference from a 100 yard zero to 500 yard point of impact is is coming from. </p><p></p><p>Quickloads calculation of muzzle velocity from your load info gives 3026 vs your measured 2980. That's pretty close and only accounts for 0.3 moa. </p><p></p><p>Had you used zero for the scope height instead of 1.7" in the ballistic program that would account for 1.3 MOA at 500 yards.</p><p></p><p>Had you used the database information on the Sierra 130 Pro Hunter bullet (.370 G1 BC instead of the Sierra Gameking (.438 g1 BC) that could account for only .53 moa </p><p></p><p>I'd still bet on the problem being a measurement or data entry error, not anything wrong with the rifle, scope, bullets, or loads.</p></blockquote><p></p>
[QUOTE="LouBoyd, post: 398884, member: 9253"] I ran some quickload and quicktarget simulations to see if I could figure out where the 2MOA difference from a 100 yard zero to 500 yard point of impact is is coming from. Quickloads calculation of muzzle velocity from your load info gives 3026 vs your measured 2980. That's pretty close and only accounts for 0.3 moa. Had you used zero for the scope height instead of 1.7" in the ballistic program that would account for 1.3 MOA at 500 yards. Had you used the database information on the Sierra 130 Pro Hunter bullet (.370 G1 BC instead of the Sierra Gameking (.438 g1 BC) that could account for only .53 moa I'd still bet on the problem being a measurement or data entry error, not anything wrong with the rifle, scope, bullets, or loads. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
calculations 2moa off, need advice
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