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Rifles, Reloading, Optics, Equipment
Reloading
Winchester primers rupturing. Help!
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<blockquote data-quote="Lefty7mmstw" data-source="post: 1075405" data-attributes="member: 48043"><p>I've had exactly one primer blow out incident (2 primers in one loaded box) in the last fifteen years (likely more than 15) caused by weak primer cups. That was in my 7stw with 215's. I stopped using the brass (20 rounds bought used- I wonder what that brass went through with the last owner) and everything was fine. I've never seen a Winchester primer blow out and I've used thousands. </p><p> </p><p>Work your brass too hard a couple of times, loosen up the pockets a bit (even if you run milder loads after that you still have oversized primer pockets) Then set your headspace a bit short on your sizing die. You have a good chance of loosing a primer now and again to rupture then. All you need is a batch of primers with the cups a bit on the brittle side.</p><p> </p><p>BTW., all primer cups sold by the major makers are brass.... some are just plated...</p></blockquote><p></p>
[QUOTE="Lefty7mmstw, post: 1075405, member: 48043"] I've had exactly one primer blow out incident (2 primers in one loaded box) in the last fifteen years (likely more than 15) caused by weak primer cups. That was in my 7stw with 215's. I stopped using the brass (20 rounds bought used- I wonder what that brass went through with the last owner) and everything was fine. I've never seen a Winchester primer blow out and I've used thousands. Work your brass too hard a couple of times, loosen up the pockets a bit (even if you run milder loads after that you still have oversized primer pockets) Then set your headspace a bit short on your sizing die. You have a good chance of loosing a primer now and again to rupture then. All you need is a batch of primers with the cups a bit on the brittle side. BTW., all primer cups sold by the major makers are brass.... some are just plated... [/QUOTE]
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Winchester primers rupturing. Help!
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