72gr Imr4350 under 225gr Ab produces 2850 in my abolt. I have had absolutely no luck with RL19 in my 338 wm, IMR4350 is my goto but found positive with 4831 as well as of late.
225gr ab has been a dandy for me in the 338wm, done a bang up job on elk and moose.
Good luck
Good luck