I have a S&W 625 JM and am in the process of working up a heavy hunting load for it. Ran out of cast bullets so until I pour more I tried some 230 gr XTP with 2400 in Auto Rim brass. Turned out to be my most accurate load to date but I really need a crimp groove to maximize the burn potential of the slower powder. Not sure of the velocity of this but I would guess 900 fps+ if not more.