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Rifles, Reloading, Optics, Equipment
Reloading
New Brass vs Old Brass
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<blockquote data-quote="ChiefStone" data-source="post: 2139122" data-attributes="member: 117850"><p>You might be over working your brass when you are resizing. If so, then I agree with the others that have said this could be a neck tension issue, along with a slight change in the case volume.</p><p></p><p>You might want to grab a set of calipers and a Hornady case comparator set so that you can set your resizing die up to only bump your shoulder back ~ .002" from your fired case. </p><p></p><p>Another experiment would be to anneal a few of your fired cases and see if your group sizes go back down?</p></blockquote><p></p>
[QUOTE="ChiefStone, post: 2139122, member: 117850"] You might be over working your brass when you are resizing. If so, then I agree with the others that have said this could be a neck tension issue, along with a slight change in the case volume. You might want to grab a set of calipers and a Hornady case comparator set so that you can set your resizing die up to only bump your shoulder back ~ .002” from your fired case. Another experiment would be to anneal a few of your fired cases and see if your group sizes go back down? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
New Brass vs Old Brass
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