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Rifles, Reloading, Optics, Equipment
Reloading
Die question.
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<blockquote data-quote="Bart B" data-source="post: 677983" data-attributes="member: 5302"><p>Yes, a steel (not brass) Redding full bushing die will probably do as good as anything. Sierra Bullets uses these full length sizing dies on all cases they're made for testing their bullets for accuracy. And the most accurate reloaded ammo I know of has all been made with such full length sizing dies setting the fired case shoulder back a couple thousandths. Use a bushing about 2 or 3 thousandths smaller than the neck of a loaded round. No expander ball's used so sized case necks will be straighter than dies using expander balls. RCBS also makes full length sizing dies using bushings.</p><p></p><p>Using such a die, regular seating dies will make ammo pretty straight. It all depends on the case neck being straight. If it's not straight, no seating die will straighten it up as a bullet's seated. Micrometer seating dies help make very accurate small changes to seating depth, but they don't seat bullets any straighter than other seating dies. As long as you seat bullets out far enough to just barely touch the lands when a round's chambered, best accuracy usually happens. 'Course if you have to seat bullets deeper so the rounds will fit a box magazine, then such is life. But straight seated bullets can jump 1/10th inch to the rifling and still have 1 MOA accuracy or better at 600 yards.</p></blockquote><p></p>
[QUOTE="Bart B, post: 677983, member: 5302"] Yes, a steel (not brass) Redding full bushing die will probably do as good as anything. Sierra Bullets uses these full length sizing dies on all cases they're made for testing their bullets for accuracy. And the most accurate reloaded ammo I know of has all been made with such full length sizing dies setting the fired case shoulder back a couple thousandths. Use a bushing about 2 or 3 thousandths smaller than the neck of a loaded round. No expander ball's used so sized case necks will be straighter than dies using expander balls. RCBS also makes full length sizing dies using bushings. Using such a die, regular seating dies will make ammo pretty straight. It all depends on the case neck being straight. If it's not straight, no seating die will straighten it up as a bullet's seated. Micrometer seating dies help make very accurate small changes to seating depth, but they don't seat bullets any straighter than other seating dies. As long as you seat bullets out far enough to just barely touch the lands when a round's chambered, best accuracy usually happens. 'Course if you have to seat bullets deeper so the rounds will fit a box magazine, then such is life. But straight seated bullets can jump 1/10th inch to the rifling and still have 1 MOA accuracy or better at 600 yards. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Die question.
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