No idea what the issue was. I reloaded 300 rounds with the dillon crimp die and everything was fine.Completely unrelated-
Did you ever figure out what was going on with your 9mm brass?
The 6X fired stuff you were getting brass rings off of?
I will need to look at the Hornady die.
Now my press has dies from Lee, Hornady, Dillon and soon a bullet seating die from Redding. I use one for rifle and I love it.