I tried some loads of 405 Remington FNSP using large rifle CCI primers over 15.2 grains of Unique yesterday. I had several Failures to Fire even though the primers were clearly struck hard. Plus, among those that fired I had sticky extraction. The primers were not flattened and the brass looked OK but I think I was experiencing high pressure spikes. I put those loads away and will disassemble them this week. I am going to stick with my H4895 loads. They shoot dirty like Remington's trapdoor loads but are well-mannered and appear accurate.
T.S.
