Most of what I have to offer has been said above. I started with an RCBS press mounted swaging kit and had the same sort of problems. Imperial sizing wax on the swaging nub helped and going deeper than I thought I had to was the best solution. Brass primed just fine. However, swaging was difficult. Brass constantly needed to be forced off the swaging nub with a lot of force, but the tools worked. I bought a used Dillon 600 swaging unit on here and haven't look back. I can do 1000 cases in an evening, no stuck cases, no deformed cases, and have had no trouble priming cases. That said, if you don't reload for an AR and don't shoot 1000 rounds of 223 a year, the RCBS should be more cost effective, especially if you collect/save your spent brass. If you shoot and load more than that, the Dillon, like all things Dillon in my opinion, is worth the cash outlay.