I have been loading some lapua 6.5x47 brass that has 12 firings on them and the last couple times seating Bullets feel like they are hitting a wall then pushing through. Like there is a ring inside the neck it has to go through. It is just past the entrance that I feel it. Not all cases have this but let’s say about 1/2 of the 200 count lot I have does this. I just bought a pma neck expander to see if that helps and I can obviously feel this “ring” on the down and up strokes. The brass has been annealed after every firing since probably the 6th firing on my benchsource, resized with Redding types dies with no expander and .002 neck tension. What could be causing this and what would be the cure? Accuracy and ES/SD have gone down the drain.