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Old April 30, 2012, 08:31 AM   #8
PawPaw
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Join Date: December 24, 2010
Location: Central Louisiana
Posts: 3,113
I had that same experience with a bag of 7mm Rem Mag brass I bought last year. New brass in a factory bag, and for the life of me I can't remember if the brass was Remington or Winchester. I prepped it all, like I do new brass and on the first firing a considerable percentage (about 30%) showed splits in the shoulder. I chalked it up to bad annealing at the factory and didn't make an issue of it.

.30-30 brass has that long, lovely thin neck that cast bullet shooters so admire and I suppose it's possible that a bad batch gets out once in a while.
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