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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Full Length or Neck Only; What's Best Resizing for Accuracy?
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<blockquote data-quote="J E Custom" data-source="post: 1804265" data-attributes="member: 2736"><p>The reason some like to neck size only is that the case already fills the chamber and there is no head space so the case cannot move even with the firing pin strike.</p><p>The only change in the case, is the neck and it expands to release the bullet that is already centered. </p><p></p><p>Another example that zero case movement is a benefit is in the AI cases. they actually have .004 thousandths compression In the chamber. This prevents any case movement and enhances the quality of the fire forming process. The biggest advantage is the accuracy when done this way. Most AI's (Ackley improved)cartridges are very accurate while fire forming and many will shoot 1/2 MOA while fire forming. All are plenty good to hunt with at reasonable ranges before with the parent case If set up right.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1804265, member: 2736"] The reason some like to neck size only is that the case already fills the chamber and there is no head space so the case cannot move even with the firing pin strike. The only change in the case, is the neck and it expands to release the bullet that is already centered. Another example that zero case movement is a benefit is in the AI cases. they actually have .004 thousandths compression In the chamber. This prevents any case movement and enhances the quality of the fire forming process. The biggest advantage is the accuracy when done this way. Most AI's (Ackley improved)cartridges are very accurate while fire forming and many will shoot 1/2 MOA while fire forming. All are plenty good to hunt with at reasonable ranges before with the parent case If set up right. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Full Length or Neck Only; What's Best Resizing for Accuracy?
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