Could be you are at the end of your brass' life sportsdad60, maybe too much brass has flowed up too the necks and with your sizing die just working the outside, the inside neck is ending up too small.
This was once shot brass, straight out of the box.
gnoahhh, the Hornady decapper/resizing die doesn't have an expander ball. So yeah, a 3rd die was ordered to flare it ever so slightly.
Sorry for the thread hijack!
