Yes, and so far so good. Initially tried seven loads yesterday morning, 10 shot groups at 25 yards rested over sandbags, and the best one was 1 1/4" with a few others hovering either side of 2". The most accurate one was also the fastest - 5.5 grains of True Blue. Haven't chronographed it out of this revolver yet but interpolating its performance based on this same load in the 3" M60 and a 6" M14 it should be going about 900 fps.
Three bullets tried were the Hornady 148 HBWC, a Missouri Bullet Company 148 DEWC and my own cast Accurate 358160A, a powder coated 160 grain WFN. It gave me a bit of smug satisfaction that the three loads using my own cast bullets were the three most accurate ones.
The bullets were all .358" diameter and the chamber throats measure .357, so tomorrow I'm going to try two 15 shot groups with the best performing load; one group with the .358 bullets again and one with them sized to .357.
