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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
280AI barrel twist
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<blockquote data-quote="Mikecr" data-source="post: 1907809" data-attributes="member: 1521"><p>Hornady's website tells you 9.5:1 for 162 ELD-X, 8.5:1 for the 175.</p><p>So you can plug the 175 into ballistic software and see the optimum twist for the atmospheric conditions you will be shooting at.</p><p>Example, for the 175 ELD-X:</p><p>At 32degF and sea level optimum would be 8.3:1.</p><p>At 70degF and 2,600 above sea level, 9.0:1 would be optimum.</p><p></p><p>I'm sure it helps to consider this stuff.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1907809, member: 1521"] Hornady's website tells you 9.5:1 for 162 ELD-X, 8.5:1 for the 175. So you can plug the 175 into ballistic software and see the optimum twist for the atmospheric conditions you will be shooting at. Example, for the 175 ELD-X: At 32degF and sea level optimum would be 8.3:1. At 70degF and 2,600 above sea level, 9.0:1 would be optimum. I'm sure it helps to consider this stuff. [/QUOTE]
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280AI barrel twist
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