I have a .30 Carbine Ruger Blackhawk, and I've gotten up to 1720 fps with 100 grain bullets with it, using WSF powder; but I abandoned that load because it caused excessive case head expansion (primers fell out after one shot.) I have very little doubt that I could have safely gone a lot higher if I was willing to sacrifice the brass.
I need to work up something similar using Blue Dot. Blue Dot might get to 1700 without ruining the brass...