My thoughts are, any load that equals or betters a 185 to 230gr 45 ACP self defense load is good to go in a big bore short barreled revolver.
Great minds think alike. I checked my 1917 with 230 gr. military ball and the speed was 790 FPS. My 3 in. .44M, 240. gr. SWC and 9 grs. Unique is 940 FPS. That exceeds the .45 and I can shoot 6 times just as fast. Larry