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Rifles, Reloading, Optics, Equipment
Reloading
Primer cratering on all loads
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<blockquote data-quote="Reloader222" data-source="post: 1635121" data-attributes="member: 25295"><p>I think you ruled out possible head space problem from sizing shoulders of brass too much back. Then the only possible problem could be that you are over maximum pressure (please check load data) which cause the primer cup to be forced/flow inside the firing pin hole and thereby causing a ring around the firing pin indent (see ring on problem primers) which result in the primer cup becoming thinner in that area and which then result in this part of the primer popping out. Lower the powder charge with 1/2 - 1 grain and see what happens. If that is not the problem I would say that it might be the quality of the primer cups. Try a different lot number of the same brand. Also make sure you do not seat bullets into the barrel lands since that could also cause over-pressure.</p></blockquote><p></p>
[QUOTE="Reloader222, post: 1635121, member: 25295"] I think you ruled out possible head space problem from sizing shoulders of brass too much back. Then the only possible problem could be that you are over maximum pressure (please check load data) which cause the primer cup to be forced/flow inside the firing pin hole and thereby causing a ring around the firing pin indent (see ring on problem primers) which result in the primer cup becoming thinner in that area and which then result in this part of the primer popping out. Lower the powder charge with 1/2 - 1 grain and see what happens. If that is not the problem I would say that it might be the quality of the primer cups. Try a different lot number of the same brand. Also make sure you do not seat bullets into the barrel lands since that could also cause over-pressure. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Primer cratering on all loads
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