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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Let's argue about BC's
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<blockquote data-quote="Topshot" data-source="post: 481076" data-attributes="member: 13285"><p>Groper,</p><p>I have taken your thoughts on board and will redo the test. This time I will check how they shoot at 100 yards and at 1000 yards in direct comparison with unmodified bullets. I will take accurate measurements and photo's of the meplats and post them on a new thread once the test has been completed.</p><p> </p><p>If you are right, and the result is that they do shoot lower at 100 yards as well as 1000 yards, then it will be simply be a change in zero effect and not a reduction in B.C. I will then have to test them on game. This could be a win/win situation. </p><p> </p><p>As Bryan says........</p><p><em>One thought might be that if the mass is not removed perfectly concentric from the hollow point, the resulting dynamic mass imbalance would cause the bullet to fly with a small amount of yaw, which would cause induced drag on the bullet (elevating it's drag above what it would be for a bullet flying with zero yaw).</em></p><p> </p><p>This sounds like it could be a logical explaination, but I would have thought that a reduction in accuracy would have occured at 1000 yards as well, and that was not the case.</p><p> </p><p>Time will tell. I can not do it this week as I have to go away hunting Fallow deer for a week, but when I get back some lead will fly. In the mean time you or Bryan, are welcome to try this simple test yourself.</p></blockquote><p></p>
[QUOTE="Topshot, post: 481076, member: 13285"] Groper, I have taken your thoughts on board and will redo the test. This time I will check how they shoot at 100 yards and at 1000 yards in direct comparison with unmodified bullets. I will take accurate measurements and photo's of the meplats and post them on a new thread once the test has been completed. If you are right, and the result is that they do shoot lower at 100 yards as well as 1000 yards, then it will be simply be a change in zero effect and not a reduction in B.C. I will then have to test them on game. This could be a win/win situation. As Bryan says........ [I]One thought might be that if the mass is not removed perfectly concentric from the hollow point, the resulting dynamic mass imbalance would cause the bullet to fly with a small amount of yaw, which would cause induced drag on the bullet (elevating it's drag above what it would be for a bullet flying with zero yaw).[/I] This sounds like it could be a logical explaination, but I would have thought that a reduction in accuracy would have occured at 1000 yards as well, and that was not the case. Time will tell. I can not do it this week as I have to go away hunting Fallow deer for a week, but when I get back some lead will fly. In the mean time you or Bryan, are welcome to try this simple test yourself. [/QUOTE]
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Let's argue about BC's
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