I do not Imagine It is what gun they have been shot it, that sometimes demonstrates for a foundation bulge just after sizing. I might probably evaluate you sizing die and powder funnel. My modern order for any Lee 9mm carbide "undersize" resizing die that reduces the case diameter by https://9mm-brass-for-sale62963.blogsmine.com/37220704/considerations-to-know-about-reloading-9mm