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Rifles, Reloading, Optics, Equipment
Reloading
Wondering when to retire .30-06 brass (sectioned brass photos included)
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<blockquote data-quote="1Moose" data-source="post: 1390517" data-attributes="member: 74044"><p>dougduey, Others know far more about this than me, so I'll let them weigh in on what the images show or don't show.</p><p></p><p>Something that might be helpful. While I sectioned some cases (shown in original photos of post) with a die grinder, others generously shared the good advice to bend a paper clip and run it up the inside of the case. If you feel it catch in a particular spot on the case, that's a sign of thinning. I hadn't used that technique before, but I intend to in the future. And I'll cut one open if I ever get that catch from the paperclip to see how pronounced the thinning became.</p><p></p><p>When I first started using my Sinclair concentricity gauge, I had a "What the heck is that line!" reaction. I wondered how I had missed the tell-tale sign of case thinning until so late in my case prep (the very last step, even!). It turned out that the ball-style support platform that you rotate the case on was putting an absolutely perfect cosmetic line around the case (in two places, granted). If you're using that gauge, it could be worth confirming that's not part of what you're seeing in addition to giving the paper clip method a try. If you do and can report back, that'd be awesome.</p></blockquote><p></p>
[QUOTE="1Moose, post: 1390517, member: 74044"] dougduey, Others know far more about this than me, so I'll let them weigh in on what the images show or don't show. Something that might be helpful. While I sectioned some cases (shown in original photos of post) with a die grinder, others generously shared the good advice to bend a paper clip and run it up the inside of the case. If you feel it catch in a particular spot on the case, that's a sign of thinning. I hadn't used that technique before, but I intend to in the future. And I'll cut one open if I ever get that catch from the paperclip to see how pronounced the thinning became. When I first started using my Sinclair concentricity gauge, I had a "What the heck is that line!" reaction. I wondered how I had missed the tell-tale sign of case thinning until so late in my case prep (the very last step, even!). It turned out that the ball-style support platform that you rotate the case on was putting an absolutely perfect cosmetic line around the case (in two places, granted). If you're using that gauge, it could be worth confirming that's not part of what you're seeing in addition to giving the paper clip method a try. If you do and can report back, that'd be awesome. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Wondering when to retire .30-06 brass (sectioned brass photos included)
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