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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New Hornady 6.5 PRC
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<blockquote data-quote="Greyfox" data-source="post: 1455849" data-attributes="member: 10291"><p>The 7.5 twist in the 6.5x284/PRC will provide a good margin of stability using the 140-150+ grain offerings given the velocities you will be running in the 6.5PRC. Running an un-necessarily faster twist rate then required to stabilize the bullet generates additional heat(and stripping)in the barrel- entering the lands, which can result in increased throat wear, potentially effecting barrel life and accuracy. This could be an issue if you were to run the lighter 120-130gr bullets at the higher velocires which they are capable of achieving. The benchresters strive to use a twist rate that's just sufficient to fully stabilize the bullet of choice. With fast twist barrels, bullets with thin/frangible jackets should be avoided. Also, bullet imperfections, and and lead core inconsistencies can be exaggerated by a faster spinning bullet. These are the reasons that manufacturers don't simply supply their rifles/barrels with the fastest twist.</p></blockquote><p></p>
[QUOTE="Greyfox, post: 1455849, member: 10291"] The 7.5 twist in the 6.5x284/PRC will provide a good margin of stability using the 140-150+ grain offerings given the velocities you will be running in the 6.5PRC. Running an un-necessarily faster twist rate then required to stabilize the bullet generates additional heat(and stripping)in the barrel- entering the lands, which can result in increased throat wear, potentially effecting barrel life and accuracy. This could be an issue if you were to run the lighter 120-130gr bullets at the higher velocires which they are capable of achieving. The benchresters strive to use a twist rate that’s just sufficient to fully stabilize the bullet of choice. With fast twist barrels, bullets with thin/frangible jackets should be avoided. Also, bullet imperfections, and and lead core inconsistencies can be exaggerated by a faster spinning bullet. These are the reasons that manufacturers don’t simply supply their rifles/barrels with the fastest twist. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New Hornady 6.5 PRC
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