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Rifles, Reloading, Optics, Equipment
Reloading
Novice reloader looking for help
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<blockquote data-quote="vancewalker007" data-source="post: 2474144" data-attributes="member: 66917"><p>That's a case head separation. I've seen it many times with my 7mm STW back in the old days when we made cases out of 300 Weatherby brass. You had a leak in that case that caused a pressure differtial where the pressure pushed forward towards the neck and made those dimples. You are likely over bumping the shoulder causing brass thinning just above the belt. Drop your shoulder bump to 1-3 thou and be really careful shooting any of that brass you've been over working. Check for bumps using a paper clip or dental pick. Toss the ones that have signs of the start of separation.</p></blockquote><p></p>
[QUOTE="vancewalker007, post: 2474144, member: 66917"] That's a case head separation. I've seen it many times with my 7mm STW back in the old days when we made cases out of 300 Weatherby brass. You had a leak in that case that caused a pressure differtial where the pressure pushed forward towards the neck and made those dimples. You are likely over bumping the shoulder causing brass thinning just above the belt. Drop your shoulder bump to 1-3 thou and be really careful shooting any of that brass you've been over working. Check for bumps using a paper clip or dental pick. Toss the ones that have signs of the start of separation. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Novice reloader looking for help
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