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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bullet stabilization, strictly RPM?
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<blockquote data-quote="goodgrouper" data-source="post: 168172" data-attributes="member: 2852"><p>No two barrels can be counted on to equally stabilize bullets by simply matching their RPM's alone. Even with proper twists for the bullet at hand, one barrel will treat the bullet different than the other even if the RPM's are the same.</p><p></p><p>Stabilization is more than just cranking up RPM's to a certain number. It matters more that the yaw is reduced as much as possible as fast as possible and that comes from twist rate or distance covered by one revolution and also a host of other things. RPM's of course are intertwined in this equation but are not the direct comparison.</p><p></p><p>In other words, you could get a Berger 140 6.5 mm bullet to stabilize in a 10 twist by pushing up the speed to attain a specific RPM and even fire it in a thin atmosphere and it would work, but it would be better served to just use the recommended twist of 9and keep the bullet in it's factory design specifications. I have always seen this to give more accurate groups.</p></blockquote><p></p>
[QUOTE="goodgrouper, post: 168172, member: 2852"] No two barrels can be counted on to equally stabilize bullets by simply matching their RPM's alone. Even with proper twists for the bullet at hand, one barrel will treat the bullet different than the other even if the RPM's are the same. Stabilization is more than just cranking up RPM's to a certain number. It matters more that the yaw is reduced as much as possible as fast as possible and that comes from twist rate or distance covered by one revolution and also a host of other things. RPM's of course are intertwined in this equation but are not the direct comparison. In other words, you could get a Berger 140 6.5 mm bullet to stabilize in a 10 twist by pushing up the speed to attain a specific RPM and even fire it in a thin atmosphere and it would work, but it would be better served to just use the recommended twist of 9and keep the bullet in it's factory design specifications. I have always seen this to give more accurate groups. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bullet stabilization, strictly RPM?
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