I am a beginner reloader. I have a Rock Chucker Supreme and I ordered a 3 die set of RCBS 9mm Luger dies, PN 20515 Group B. I am using polymer coated lead bullets that measure .356 at the base. I worked up some dummy rounds and they get stuck in the barrel of my CZ 75B. Factory loads can move in and out of the barrel with ease but the reloads won't seat all the way into the barrel and when they are seated all the way in I need pliers to pull them out. I tried seating the bullet further in on the dummy loads but it doesn't make a difference. I also tried moving the crimp die further down but that didn't seem to help either. Empty cases that have been resized and the mouth expanded move in and out of the barrel with ease. What am I doing wrong? Any help is appreciated.