Homework and prudence are definitely key!  We all know what happened when the military tried to squeeze an extra couple thousand FPS out of the Krag!  Much better to be safe than sorry... and 1950 - 2000 FPS is plenty fast enough to take game and score tens with a Krag shooting a 220 grain bullet! 

My Lyman 49th shows considerably higher loads than I would ever be comfortable with for 30-40, and has no mention of whether it's for a Win 95, Ruger #1 or #3, or the High-Wall.  Now I have consulted the Lyman with regards to loads for cast, but I also take them with a grain of salt, and bounce the data against other sources!