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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Gel Test Data part 2
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<blockquote data-quote="IllinoisBurt" data-source="post: 2673005" data-attributes="member: 35752"><p>Aside from stabilizing the bullets at their lower velocity, do we know if the reduced start rpm would have a significant impact on observed terminal performance versus what we expected to see from a full velocity (and rotational speed) bullet when it impacts downrange? I don't believe the rotation decreases anywhere near as quickly as velocity over time/distance due to the difference in air resistance on the spinning side bearing surface compared to the front bearing surface pushing through the air. So in your testing we started with a full speed bullet from 1:8 twist versus reduced speed 1:9. My math may be off a little but it would seem a better comparison for the reduced start load be somewhere around 1:6 to approximate the rotation.</p></blockquote><p></p>
[QUOTE="IllinoisBurt, post: 2673005, member: 35752"] Aside from stabilizing the bullets at their lower velocity, do we know if the reduced start rpm would have a significant impact on observed terminal performance versus what we expected to see from a full velocity (and rotational speed) bullet when it impacts downrange? I don't believe the rotation decreases anywhere near as quickly as velocity over time/distance due to the difference in air resistance on the spinning side bearing surface compared to the front bearing surface pushing through the air. So in your testing we started with a full speed bullet from 1:8 twist versus reduced speed 1:9. My math may be off a little but it would seem a better comparison for the reduced start load be somewhere around 1:6 to approximate the rotation. [/QUOTE]
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Gel Test Data part 2
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