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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
??? Gain, Progressive, Incremental, or Transitional Twist
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<blockquote data-quote="Bart B" data-source="post: 500238" data-attributes="member: 5302"><p>All the top custom barrel makers agree the single most common cause of poor accuracy in an otherwise "perfect" barrel is a non-consistant twist. Some offer tests on your barrel's twist to see if there's any change in the rate as a tool's pushed through the bore; they'll send you a percentage number showing the amount of uneven twist (or something like that).</p><p></p><p>Any change in twist rate will change the engraving angle on a bullet the rifling makes. And it won't do in uniformly all the way around the bullet. The bullet will then be more unbalanced than when it was when entering the rifling. Depending on how the jacket peels/deforms/resahaps when this happens, the result is displaced jacket material.</p><p></p><p>Why unbalance a bullet any more than it already is?</p></blockquote><p></p>
[QUOTE="Bart B, post: 500238, member: 5302"] All the top custom barrel makers agree the single most common cause of poor accuracy in an otherwise "perfect" barrel is a non-consistant twist. Some offer tests on your barrel's twist to see if there's any change in the rate as a tool's pushed through the bore; they'll send you a percentage number showing the amount of uneven twist (or something like that). Any change in twist rate will change the engraving angle on a bullet the rifling makes. And it won't do in uniformly all the way around the bullet. The bullet will then be more unbalanced than when it was when entering the rifling. Depending on how the jacket peels/deforms/resahaps when this happens, the result is displaced jacket material. Why unbalance a bullet any more than it already is? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
??? Gain, Progressive, Incremental, or Transitional Twist
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