I have the RCBS primer pocket swaging kit that is like a die, with what they call a "washer" that slips over the swaging punch (which goes into the press ram like a shellholder). The rod in the die pushes the case down onto the swaging punch when the press handle is operated, then the "washer" comes up and removes the case from the punch when the ram is lowered all the way. It works....but not that well on some cases. It can still be hard to seat primers, and the result, with some, will still be deformation. I run my military brass (never done much, most I've bought has had the mil crimp removed) through this RCBS dingus, and then I still take the edge off the pocket with a couple of turns with my Wilson chamfering tool. That works. It seems to be important to have a tool that puts a certain radius on the primer pocket edge; maybe that Dillon swager wil do it, but I'd never pay that much for it, since I just don't have that much mil brass to mess with.