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Message: <blockquote data-quote="Blitzfike" data-source="post: 2581382" data-attributes="member: 807"><p>Those cases are bad, I experienced that and had one blow out with a mid range load.. Exciting to say the least. Looking at the possible causes, I determined that it was from a batch of Glock fired brass with the infamous glock bulge at 6:00 and those were really obvious. Work hardening of the brass during several loading cycles is what I believe caused that in my case. I went back through all the 9mm I had loaded and found about a dozen in three different runs that were that way. I pulled the components and crushed the cases and pitched them in my scrap bin.  Now if I find brass with a great bulge, I just put it in my scrap bin to be safe.</p></blockquote><p></p>