I was loading 50 rounds on the weekend with 25 new RP cases and 25 previously fired NNy cases. I full-length resized but at the range the rounds were very tight to chamber. The RP were ok but much tighter than normal, the NNy require a shwartzenegger wrist to chamber. I checked bullet seating depth and it is not a problem. All cases were trimmed. A couple of fired RP cases chamber no problem. I didn't fire the nny as they were so tight, i was concerned. What gives, did I set up my dies incorrectly? shoulder not back enough? I though I had been diligent.
Thanks for any thoughts