Have you ever had problems with the RCBS hand priming tool?

I have used mine loading large rifle and large rifle magnum primers without any problems. I tried using it tonight for large magnum primers for my .44 Rem. mag. for the first time, and the primers just didn't want to go into the primer pocket. They were CCI primers, and I have 3 or 4 different brands of cases, didn't make any difference which on I tried to prime. All of the cases where decapped before I put them through the tumbler. The only thing I could do to get the primers to go in was to put a slight bit of pressure on the primer and the case then rotate the case untill I could feel the primer align itself. I checked to make sure I had the large seater installed, which I did.