I have recently been testing some 180 gr. RNFP Dardas lead bullets (see MO sponsors) in my 1894 .44mag., and they are fine in the 1700 to 1950 FPS range with more velocity to spare. I plan on slowing them down to about 1600 for plinking.
On another note, I just ordered some 180 and 185 gr. for my 1894c from Beartooth bullets. A little on the heavy side maybe. Haven't received them yet, but I like the way they are shaped. I'm having a little trouble finding loading data for this weight in .357. I might have to start from scratch.