I can’t say Osage makes a bad English longbow but it is finicky. It definitely wants an elliptical tiller with the handle just barely moving. If it starts to get a little too circular it’ll shake then snot out of you. If you notice too much hand shoc, put a mark about 10” either way of the handle and evenly reduce weight outside that mark little bits at a time and eventually the shock will subside. It will also be quite skinny. A 50# draw bow should be under 1” at its widest and 3/8” or smaller at the tips.
Kyle