[myfriendis410]

Well something is not right with his dies or setup. For the brass to come out of the press with varying i.d.'s in the tight fitting cases (sic) there has to be some other mechanism in play. The mandrel dimension he quotes of .2225" should be the same across the board, even with wall thickness variations. Hmm. Very odd.

Could some of the brass be work hardened enough that it springs back after sizing? Case annealing might solve the problem. My experience is with conventional dies and I don't see this happening with them.