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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
OVERSPIN ??? twist and bullet spin
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<blockquote data-quote="elkaholic" data-source="post: 907207" data-attributes="member: 13833"><p>I agree with Jeff! There is nothing to be gained from over twisting and potentially, much to lose. Twist requirements are more directly connected to length than weight. The idea is to use just enough twist to stablize the longest bullet that you will be shooting, taking into consideration the elevation you will be shooting it at. If bullets were perfect in balance and concentricity, it wouldn't be as much of an issue, but of course they aren't. Also, as Jeff mentioned, wider lands are harder on bullets and accentuate the problems of higher rotation. Except for some of the extremely long 250-260 grain tipped bullets that I have played with, I can't think of an occasion where an 8 twist would be needed in a .308"....Rich</p></blockquote><p></p>
[QUOTE="elkaholic, post: 907207, member: 13833"] I agree with Jeff! There is nothing to be gained from over twisting and potentially, much to lose. Twist requirements are more directly connected to length than weight. The idea is to use just enough twist to stablize the longest bullet that you will be shooting, taking into consideration the elevation you will be shooting it at. If bullets were perfect in balance and concentricity, it wouldn't be as much of an issue, but of course they aren't. Also, as Jeff mentioned, wider lands are harder on bullets and accentuate the problems of higher rotation. Except for some of the extremely long 250-260 grain tipped bullets that I have played with, I can't think of an occasion where an 8 twist would be needed in a .308"....Rich [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
OVERSPIN ??? twist and bullet spin
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