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Rifles, Reloading, Optics, Equipment
Reloading
Odd Pressure Issue
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<blockquote data-quote="Lefty7mmstw" data-source="post: 1091086" data-attributes="member: 48043"><p>I'll play here.... I've seen the same/similar thing with my old 7stw barrel.. One box of brass I had blew three primers on me with a known good load... I had a couple of issues with that rifle-- loose headspace was the big one but a crappy barrel/receiver fitment was a big problem too.</p><p> </p><p>I looked at what the problem was after I lost rounds two and three; turns out it was <em>used brass</em> I had bought from a lgs to bolster my brass supply. Between the beat up brass and loose fitment with the super generous headspace, the primer really didn't stand a chance...</p><p> </p><p> </p><p>I would get your rifle over a decent chrono and see where you are really stepping out at. I would also do a load run up with another powder and check the things like brass length, neck thickness vs/ chamber width, etc. that could net you way more pressure than anticipated. Are you sure you are off .030" or might you be resting your bullet on the rifling?? </p><p>Check everything and you will find your issue.... I'd bet you a wooden nickel it isn't the primer. The pierced primer is the effect of something else garfed up...</p></blockquote><p></p>
[QUOTE="Lefty7mmstw, post: 1091086, member: 48043"] I'll play here.... I've seen the same/similar thing with my old 7stw barrel.. One box of brass I had blew three primers on me with a known good load... I had a couple of issues with that rifle-- loose headspace was the big one but a crappy barrel/receiver fitment was a big problem too. I looked at what the problem was after I lost rounds two and three; turns out it was [I]used brass[/I] I had bought from a lgs to bolster my brass supply. Between the beat up brass and loose fitment with the super generous headspace, the primer really didn't stand a chance... I would get your rifle over a decent chrono and see where you are really stepping out at. I would also do a load run up with another powder and check the things like brass length, neck thickness vs/ chamber width, etc. that could net you way more pressure than anticipated. Are you sure you are off .030" or might you be resting your bullet on the rifling?? Check everything and you will find your issue.... I'd bet you a wooden nickel it isn't the primer. The pierced primer is the effect of something else garfed up... [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Odd Pressure Issue
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