Quote from: Aegis on October 13 2022 04:10:05 PM MDT
I have found that the 10mm case seem to budge at the base of the case. I loose about 10 per 100 that willl not seat in my case gauge after de priming and sizing in my Dillon 550.. I cant say how many times the brass has been reloaded.

Are you using the Dillon dies?  I?ve found their dies have more flare at the base of the die and don?t size the case down as far as I?d like.  I?ve had good luck with Redding dies in my RL1100, they size a little further down the case.