Sorry for taking so long to respond, I've been busy the last couple of days:
Supercub, I tried the Lee Collet dies once years ago and had numerous problems (can't recall exactly what they were) and haven't tried again.
Mule Deer; brass is once fired factory I got from a buddy close to 30 years ago.I will have a look at sizing without the expander ball.
Joezone; I use the powdered Imperial lube for neck sizing, this was full length sizing.
Steve; I'll check out the Corbin lube
In general I was using corncob media in the tumbler and getting large amounts of media inside the case and neck, Enough of it in some cases to impact powder volume. A recent switch back to walnut shell media has improved things.
Use the cheap Lee trimmers which act as measurement and trimmer in one step.
Thanks to all for your response. Happy father's day to all you fathers.
GRF
