Well, since this thread was revived...
I bought a really old set of rcbs dies. Loaded the cases up with probably too much powder. Used too much force seating the very soft bullets. Could not get the dies to crimp properly (roll, not taper).
Couldn't hit a man sized steel target at 25 yards. Not once in 24 shots lol. The .41 does have more pop than I was expecting though. It actually recoils like my modern .40 guns.
I ordered new redding dies and just got them, so I'll give it another go sometime in the next couple of weeks.