black walnut makes a light, fast shooting bow. the nice thing is you treat it like a white wood. peal the bark and you have your back. all white sapwood bows are all I've had a chance to do, but they have been sweet shooters. worthwhile to cloth back if there's any question about the wood though. it does take a noticeable set, at least in my experience. doesn't change my liking of the wood, though!