I've never worked with osage but I'm willing to bet you could get a pretty heavy bow out of that wit probably about 25" of draw safely. I just made a hickory holmegaard that had pretty short 2" wide bending limbs. The bow was about 54" long with 9" stiff tips. I draw it to 26"-27" safely. Depending on how wide the handle is you may even get a little bend of of it.