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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6.5-284 twist rate
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<blockquote data-quote="benchracer" data-source="post: 1182025" data-attributes="member: 22069"><p>I have a .264 WM and a 6.5x55 that each have a 9 twist barrel. Both rifles shoot 140 VLD's well under 1/2 MOA. </p><p> </p><p>I have a 6.5-284 with an 8 twist Krieger. It is not much faster than the 6.5x55. With 140 AMAX's, there is very little difference in trajectory out to 600 yards. But, there is a significant difference in wind drift, in favor of the 6.5-284. I believe that to be a reflection of improved stability (and, therefore, bc) from the 8 twist.</p><p> </p><p>I noted with interest a recent post by elkaholic indicating he had heard through the grapevine that Berger will be releasing a 155 EOL hybrid in 6.5 in the near future. Based on some rough estimates of bullet dimensions that I plugged into the Berger calculator, folks with 8 twist barrels should be able to get good use from the new bullet. Something to think about...</p></blockquote><p></p>
[QUOTE="benchracer, post: 1182025, member: 22069"] I have a .264 WM and a 6.5x55 that each have a 9 twist barrel. Both rifles shoot 140 VLD's well under 1/2 MOA. I have a 6.5-284 with an 8 twist Krieger. It is not much faster than the 6.5x55. With 140 AMAX's, there is very little difference in trajectory out to 600 yards. But, there is a significant difference in wind drift, in favor of the 6.5-284. I believe that to be a reflection of improved stability (and, therefore, bc) from the 8 twist. I noted with interest a recent post by elkaholic indicating he had heard through the grapevine that Berger will be releasing a 155 EOL hybrid in 6.5 in the near future. Based on some rough estimates of bullet dimensions that I plugged into the Berger calculator, folks with 8 twist barrels should be able to get good use from the new bullet. Something to think about... [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6.5-284 twist rate
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