I load Hornady 210gr XTP JHP's on top of 17.5grs of 2400. The load chrono'd at 1,413 fps average for 6 shot string from my S&W 57 with 6" barrel using WW case and primer.

I haven't tried to push 215gr LSWC's faster than what 9.5grs of Unique will at 1,157 fps from my 4" Mountain Pistol. Have not ran this load from the 6" over the chrono.