I do not Imagine it's what gun they ended up shot it, that sometimes displays as a base bulge just after sizing. I would possibly evaluate you sizing die and powder funnel. Once upon a time, carbide 9mm dies Value a lot more than straight case dies like .38 because https://mariobpfrd.blog-mall.com/38745880/the-single-best-strategy-to-use-for-9mm-once-fired-brass