what steps can be taken to minimize bullet runout?

1.) Squaring your dies
2.) Deprime in separate operation
3.) Move expander ball as far up as possble in sizer after depriming in sep operation
4.) When seating bullets, raise ram up to touch sizer and then back down to center brass. shell holder slop is #1 reason for bullet runout.
5.) After centering brass in shell holder, rotate brass 1/3 turn at a time and do not seat in one operation.

Turn your necks!! Good luck.

http://www.huntingnet.com/forum/tm.aspx?m=1943018

ty for the great advice guys. briman ty for the link to the earlier thread. i missed it somehow. some of the tips i allready do....some i need to try. the lee collet die did indeed make a huge difference. just a little cabin fever here and trying to wring a little bit more accuracy out of the old meat pipes. hehe.

I load for my 25 wssm,I have to full length resize and cam over a little at the end.(shoulders)
I leave my expander ball a little loose.
I also turn the outside of the necks, to uniform the neck thickness(win. brass sucks)and true them up with the inside.
My runout is usually around .002 on the necks and loadedcartrides. Every now and then .004
Plenty true for me.
I also polish the inside with a bore brush and steel wool.