I load for 357 maximum with 180’s I’m dropping 26 gr of lil gun for 2325 FPS. 27 gr. Wasn’t much faster and group opened up. To me your gun will tell you where it wants to be. If your group is good and speed doesn’t vary as much then you’re right there. How The barrel is throated can affect your load data too. Sounds to me your on track.
I built a 357 rimless which is similar to the Legend but case is 1.8” and bore is .358. I’m running 35 gr. Of AA 1680 and pushing a 180 at 2600 FPS. 150 at 2870 FPS. That little rocket is fun.