Results are in... tac, lake city brass, rem 7 1/2, rmr 75gr, 2.25 coal, 70f.
23.8gr, SD 23, avg 2759, 1.4 moa.
24gr, SD 22, avg 2790, 1.35 moa.
24.2, SD 20, avg 2811, 1.30 moa.
Baseline group
77gr smk, rem 7 1/2, 24gr rl15, 2.255 coal, no crimp.
SD 23, avg 2727, .9 moa.
Pressure signs started showing up at 24.2gr tac. Some ejector swipes and 2 slightly flattened primers out of 10 cases. 23.8 seems to be the safe maximum for my gun with this powder. I wasn't shooting my best groups today but for a bulk load charge weight with the rmr's 23.8 seems to be the ticket. I think I'm done with load development at this point and im just going to practice and improve my skills. Thanks for all the tips and advice everyone. Happy shooting.