I have about 40 pieces of good brass for .270 that was previously loaded with hybrid 100v powder by a friend of mine and had cci magnum primers. I reloaded a few pieces the other day with imr4350 and win large rifle primers and the primers seated with very, very little pressure. They kind of just slipped into place and actually are seated a little deeper than flush. I havent shot any of them yet, and is this something that can be dangerous, or am I overthinking this? I didn't know if the magnum primers are just larger and made the primer pocket a little larger than normal or what.