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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Nosler LR Accubonds: BC testing results
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<blockquote data-quote="Michael Eichele" data-source="post: 968178" data-attributes="member: 1007"><p>Bryan, the way I have understood it in the past is that excessive spin can cause a bullet's centerline to remain closer to the line of departure throughout its trajectory instead of the centerline following the path of trajectory. If that was truly the case, would that not cause a decrease in BC? Wouldn't spinning them in the 5+ sg range cause this? Having the nose pointed up throughout its flight can't help. It might help it drop less with the added pressure on the bottom of the nose which might make a shooter think the BC is higher but it's the retained velocity that would tell the tale. If I'm wrong please set me straight. I believe it was Sierra bullets that explained it that way some number of years ago.</p><p></p><p>Also, with the 168 ABLR in a 9x barrel displaying a slightly lower BC, is that within the 1st 100 yards? Is it possible for them to settle down in the next 100-200 yards? In other words, would their BC become increased the 5 percent by the time they pass 250-300 yards or so? Would the average BC over 1000 yards be 5 percent lower than the 7 twist?</p><p></p><p>Thank you,</p><p></p><p>M</p></blockquote><p></p>
[QUOTE="Michael Eichele, post: 968178, member: 1007"] Bryan, the way I have understood it in the past is that excessive spin can cause a bullet's centerline to remain closer to the line of departure throughout its trajectory instead of the centerline following the path of trajectory. If that was truly the case, would that not cause a decrease in BC? Wouldn't spinning them in the 5+ sg range cause this? Having the nose pointed up throughout its flight can't help. It might help it drop less with the added pressure on the bottom of the nose which might make a shooter think the BC is higher but it's the retained velocity that would tell the tale. If I'm wrong please set me straight. I believe it was Sierra bullets that explained it that way some number of years ago. Also, with the 168 ABLR in a 9x barrel displaying a slightly lower BC, is that within the 1st 100 yards? Is it possible for them to settle down in the next 100-200 yards? In other words, would their BC become increased the 5 percent by the time they pass 250-300 yards or so? Would the average BC over 1000 yards be 5 percent lower than the 7 twist? Thank you, M [/QUOTE]
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Nosler LR Accubonds: BC testing results
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