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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bartlein gain twist barrel
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<blockquote data-quote="FearNoWind" data-source="post: 1086731" data-attributes="member: 50867"><p>Interesting topic for which, IMO, the jury is still out.</p><p>IMO, they appear to have some promise for smaller caliber lighter weight bullets.</p><p>I'm not sure what you mean by "slow calibers". I have some large caliber rifles that move a pill down the barrel at the same velocities as the smaller calibers.</p><p>Because, IMO, barrel life is more a factor of throat erosion than wear on rifling, the gain twist barrel would have little or no effect on barrel life.</p><p>Most of the critiques I've read suggest that, with .223 caliber 75 - 90 grain bullets, there is some degree of increased accuracy using gain twist barrels. Some of the claims speak to .223 accuracy at 1K. Just because a bullet travels over 1100 FPS at 1K doesn't mean it'll remain stable enough to support consistent accuracy. I haven't seen any comparative on target examples that convince me to accept the claim of gain twist = greater accuracy. </p><p>Is it the future? Probably, at least for the short term. We'll have to see if they do in deed prove to be more accurate. But it'll only take one champion rifleman winning an important match using a gain twist barrel to heat up the market.</p></blockquote><p></p>
[QUOTE="FearNoWind, post: 1086731, member: 50867"] Interesting topic for which, IMO, the jury is still out. IMO, they appear to have some promise for smaller caliber lighter weight bullets. I'm not sure what you mean by "slow calibers". I have some large caliber rifles that move a pill down the barrel at the same velocities as the smaller calibers. Because, IMO, barrel life is more a factor of throat erosion than wear on rifling, the gain twist barrel would have little or no effect on barrel life. Most of the critiques I've read suggest that, with .223 caliber 75 - 90 grain bullets, there is some degree of increased accuracy using gain twist barrels. Some of the claims speak to .223 accuracy at 1K. Just because a bullet travels over 1100 FPS at 1K doesn't mean it'll remain stable enough to support consistent accuracy. I haven't seen any comparative on target examples that convince me to accept the claim of gain twist = greater accuracy. Is it the future? Probably, at least for the short term. We'll have to see if they do in deed prove to be more accurate. But it'll only take one champion rifleman winning an important match using a gain twist barrel to heat up the market. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Bartlein gain twist barrel
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