Is H110 the undisputed velocity king in .357?
I ask because I'm working with a pair of revolvers, 5inch 627 and a 6inch 686. Velocities with 16.5 H110 and a 158 XTP are averaging 1184 fps and 1276 respectively.
I can live with the 6inch 686 at 1276 but sub 1200 fps out of a 5 inch barrel seems slow to me. According to Lyman #49, their max is 17.7 gr. H110, anyone been that high? Results? 1250 fps is sorta my goal for the 5inch 627.