You can find .40 brass cheap places other than ebay and some of the cheap places have brass that is not fired in unsupported chambers. I bought a thousand rounds of Speer once fired brass for something like $20. I really like the Speer brass in .40. Having said that, I was given some .40 brass , once fired from an unsupported chamber. I noticed the buldge. It wasn't too large a bulge. It came out with my sizing die. I have fired it once or twice now in my supported chamber without problems, thus far. I would not knowing buy brass that was fired in an unsupported chamber though. Hope this helps.
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