I have noticed that the empties come out of my new Ruger 454 hard. I am not loaded maximum and have used 6 different powders and they all extract hard. The empties are dirty on the front third to half. I full length resize them in RCBS 454 dies and crimp with Redding Profile crimper. I noticed that the inside of the cylinder is rough and appears to have lines. Ruger says they will look at it if I send the whole gun, I have never had a problem like this before. Is there something that I am not seeing here that could be causing the problem. Any help appreciated.