I was having a problem with the Lee die... The decapping rod didn't have the length in the pin portion of the rod to completely punch out the primers from the crimped primer pockets. About every 10th case made it to the swager with the spent primer still clinging on by just a hair. When the swager came up it pressed the spent primer... the clinger... back into the primer pocket... THe Dillon sizer has more "pin" and punched the spent primers out without issue... I think that with an uncrimped primer pocket, the spent primers will come flyin out with the lee die...