I'm loading RCBS 150 FNGC (sized .310") for a 308 Win BLR. Because of tight chamber issues, I always use a RCBS Small Base X-Die for sizing. I then trim .020" under max for 1.995" case OAL. My problem is I can't expand the mouth enough to easily seat the bullet. I've run out of travel on the expander plug.
The die body lightly touches shellholder per instructions.
Advice? Many thanks.