RE: Who likes RL19 in the .243 Winchester?
I'm not sure how RL-19 would perform in the .243. This powder wasn't out yet when I loaded for one. My favorite load was 40.5 gr of IMR4350 over a Hornady 100 gr bullet. This load shot extremely well out of my old Savage 110.
I am getting good results with RL-19 out of my 325 WSM with both 180 and 200 gr bullets.