I use a pocket uniformer from... Hornady, I think? A little metal handle with screw in bits for large and small primer pockets. It has angled cutting edges at the back that bevel the primer pocket a bit (just at the case head edge). Works well to clean up my 7.62x51mm surplus brass. I don't know how quick you're looking for, but a few twists in the primer pocket and the brass is good to go.