DaveTPilot

This is a really old topic, but I thought I'd add my 2 cents on this. In my 9mm setup, the Dillon Swage Back-up Rod bottomed out in the case before expanding the case mouth enough to properly seat bullets. I took a flat file and carefully took a few thousandths off the end of the back-up rod being sure to turn it 90 degrees in between strokes to keep it flat. Now it bells the case nicely and problem solved.