Gday guys, I had some problems awhile back neck sizing my new brass had to do some serious handle pushing so thought this is no good so did some searching on the highway of information and came up with removing expander ball yes alls good so I thought. Time to trim brass run through neck sizing die go to put on pilot of trimmer and it dont fit so check pilot all good there so is the bushing to small or lack of the expander ball? So out of curiosity grabbed some 300 ultra brass out the cuboard that I neck sized same thing pilot dont fit now this was the brass that I first had the problem with heavy press handle problems. Im guessing expander ball but if it is may have to get bigger bushings but the bushings im using are only two sizes down from my outside neck diametre with projectile seated. Any ideas chaps. Cheers Rumball.