New to LugerForum and reloading 9mm...

[Johnny C. Kitchens]

I can recommend that you try the factory crimp die. I believe it helps performance, but it won't get rid of the bulge. Do the rounds chamber? I believe that the taper of the case causes some strange reloading differences that other cartridges don't have. I see the bulge you are seeing, but the still function fine, in my Luger and my friends Glock...