I have screwed the die in as far as 1 and 1/2 turns and still not chambering. The shell holder is contacting the base of the die, so I know the case is being fed all the way into the die. The only brass that works is once fired Hornady. The brass that is acting up is all other brands. I figured full-length sizing would bring all cases to same size. I wish I had another die to try. I feel I need to pull all my bullets and run all cases through once I alleviate the problem. What else could cause this?