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Hunting
Long Range Hunting & Shooting
Velocity deviation question for 700yd gun
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<blockquote data-quote="trebark" data-source="post: 414617" data-attributes="member: 19172"><p>Plugged your data into a ballistic program I have here in my office....</p><p> </p><p>140grain Accubond</p><p>BC = .496</p><p>Velocity = 3020</p><p> </p><p>With 100 yard zero, calculator said +15moa adjustment for 700 yards.</p><p> </p><p>Same data, but adjust velocity to 3055 and it's +14.5moa for 700 yards. </p><p> </p><p>That .5moa equates to ~3.5" at 700 yards. I would put that right on the edge of acceptable. Personally, I would look reduce your extreme spread (ES) down to 15 or better.</p><p> </p><p>I recently had a load for my 280 that shot accurately, but the ES was terrible. Changed primers and worked the load up again and the ES came down to 12. So maybe all you need to do is change your primer.</p></blockquote><p></p>
[QUOTE="trebark, post: 414617, member: 19172"] Plugged your data into a ballistic program I have here in my office.... 140grain Accubond BC = .496 Velocity = 3020 With 100 yard zero, calculator said +15moa adjustment for 700 yards. Same data, but adjust velocity to 3055 and it's +14.5moa for 700 yards. That .5moa equates to ~3.5" at 700 yards. I would put that right on the edge of acceptable. Personally, I would look reduce your extreme spread (ES) down to 15 or better. I recently had a load for my 280 that shot accurately, but the ES was terrible. Changed primers and worked the load up again and the ES came down to 12. So maybe all you need to do is change your primer. [/QUOTE]
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Velocity deviation question for 700yd gun
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