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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Hammer ballistic coefficient tests...
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<blockquote data-quote="WiscGunner" data-source="post: 2613341" data-attributes="member: 97288"><p>I tested the 155 (158) Hammer Hunters in my 7SS 1:8" Proof CF 26" barrel. Dead nuts clover leaf impact splashed on rick face at 763 yard… drops not remotely lined up with BallisticARC or AB (same base math) using factory g7 BC of 0.259. Tried AB's G7 BC 0.206 and was closer but not great. Switched to Trasol with AB's BC number and dead nuts. Same was true with Hornady 180gr at further distances. Common calculator formulas don't match real drops very well especially as BC deteriorates with velocity. Trasol doesn't rely on BC as the main determining factor in its calculations. A little frustrating the factory BC is so much off from common usage but thrilled with the laser accuracy of the bullets!</p></blockquote><p></p>
[QUOTE="WiscGunner, post: 2613341, member: 97288"] I tested the 155 (158) Hammer Hunters in my 7SS 1:8” Proof CF 26” barrel. Dead nuts clover leaf impact splashed on rick face at 763 yard… drops not remotely lined up with BallisticARC or AB (same base math) using factory g7 BC of 0.259. Tried AB’s G7 BC 0.206 and was closer but not great. Switched to Trasol with AB’s BC number and dead nuts. Same was true with Hornady 180gr at further distances. Common calculator formulas don’t match real drops very well especially as BC deteriorates with velocity. Trasol doesn’t rely on BC as the main determining factor in its calculations. A little frustrating the factory BC is so much off from common usage but thrilled with the laser accuracy of the bullets! [/QUOTE]
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Hammer ballistic coefficient tests...
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