Loaded my first batch of 35 Remington. New Winchester cases, Hunters Supply 246 gr. flatnose bullet (.359 dia.), Lee dies with factory crimp. When seating the bullets a small ring of lead was shaved off as the bullet seated in the case and a small, rolled bulge formed near the case mouth of some cases. I'm thinking it has something to do with how I have my die adjusted, maybe too much crimp? If I adjusted it for less crimp, I could spin the bullet in the case. What am I doing wrong? It didn't do that with every case, just some.