I am getting an occasional (1 or 2 per hundred) flattened primer. Load is 3.8 clays, F150, 230 RNL, 1.250". Loaded on a 1050. Back in the 70's when I was shooting a lot I never ran into this, was using 231 5.7/200 SWC, WLP. Any of you guys running into this? Thanks, Kirby