I think I may have just found one of my issues with the .240wby I was having reloading for it.
The neck sizing die I have from RCBS is putting approx 7 thou of run out or more! into the brass due to a misshaped expander!
That one is going back to RCBS....only noticed when I measure runout of a fired case then neck sized and measured again.....could actually see the flaw on the expander with the naked eye!
Arrrrgh.....
LC