This reply from a few years ago, seems to address my current problem, best (I was reading old forums...) I have a 38 reloading problem, with a bulge at the bottom of my 148 DBWC's that are seated almost flush in the cases. It has been happening with some brass, and more often, nickel-plated cases. .358 bullets are being used. It is just a bit frustrating. Most catridges are coming out fine, but, not always. I'm only using about 4 grains of "True Blue" so these are definitely mild loads.