I do one thing a little differently. IMO the expander ball is the root of all evil. I take the expander ball out of the dies, and do not use them. I deprime with the RCBS Depriming die. I then take the Sinclair expander mandrel to expand the neck. It works great for me. It adds a copule extra steps, but I like it. What do you guy's think of that?? Tom.
All this is very good info but another thing to watch for too is your chamfer that you make and the trim you have done on your case is also worth thinking about. If your neck is not trimed perpendicular to the axis of the case the bullet will grab the high side first and be slightly skewed.
Tom
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