I do not Believe It is what gun they were being shot it, that sometimes shows being a foundation bulge after sizing. I'd probably evaluate you sizing die and powder funnel. Adding on the reliability with the 9mm Luger, you should take into consideration which the venerable .38 Distinctive (my https://9mmcasing82074.fare-blog.com/38330391/9mm-bullets-for-reloading-an-overview