Previously I did a load work up of 2400 from the Lyman min of 11.4 up to 13.0 gr. I stopped at 13.0gr and loaded 50 but recently did a load work up from 13.4 gr of 2400 to 15 to see if I was missing anything. I was getting some unburned powder in the barrel and cases even with the 15gr load. Crimps were about as heavy as I can go with the LEE seat/crimp die (done in one step). I used standard primers. Bullet was a 158gr LSWC. Is there anything to this or is it weird?