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Hunting
Long Range Hunting & Shooting
Need advice on loading for an AR rifle
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<blockquote data-quote="stirner" data-source="post: 2758731" data-attributes="member: 44287"><p>Since the PMC ammo shot relatively well, measure the setback of a loaded round. Buy a box of another brand of ammo, with a different bullet weight. Measure the setback on these bullets also. If the second brand shoots well, that furthur reinforces the assumption that the problem is not the rifle. </p><p></p><p>When reloading, sort the brass by brand. Anneal the cases everytime they are fired. Setback the shoulders the same amount as the factory cases. What you're trying to do, is duplicate the way the factory rounds are constructed. So, if the above doesn't work, then trim the cases to exactly the same length, and try different degrees of crimp. Good luck.</p></blockquote><p></p>
[QUOTE="stirner, post: 2758731, member: 44287"] Since the PMC ammo shot relatively well, measure the setback of a loaded round. Buy a box of another brand of ammo, with a different bullet weight. Measure the setback on these bullets also. If the second brand shoots well, that furthur reinforces the assumption that the problem is not the rifle. When reloading, sort the brass by brand. Anneal the cases everytime they are fired. Setback the shoulders the same amount as the factory cases. What you're trying to do, is duplicate the way the factory rounds are constructed. So, if the above doesn't work, then trim the cases to exactly the same length, and try different degrees of crimp. Good luck. [/QUOTE]
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Need advice on loading for an AR rifle
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