I don't Feel It can be what gun they have been shot it, that usually shows to be a foundation bulge following sizing. I'd most likely measure you sizing die and powder funnel. SmokinNJokin wrote:In my exploration, I have landed on the summary that crimp is essential for guide ammo https://9mmcasing43185.bloguetechno.com/9mm-bullet-reloading-options-73281526