So 204 is arriving this week so to is reloading brass and heads. I already load for 223 so have some powders. I have found data for benchmark, H335, TAC, X-terminator and N133 all of which I have but most of N133 and Benchmark.
Does anyone have any experience with these powders? If so which would you recommend I start with?
Ps sorry forgot to say loading 39gr SBK heads.