I've made too many ash bows to count, mainly in the 80lb - 115lb range but some above, some below etc. It likes to be very dry, it loves heat treating and will chrysal on you if you breathe too close to it or look at it funny.
Ash bows tend to be wider than similar poundage bows of other wood species - this helps keeps the set and chrysals to a minimum. It works reasonably well if you have the right tools, and is a bit finicky about tillering i.e. get it right, don't ever pull beyond a certain point if the tiller isn't perfect.
I have found that ash is absolutely perfect for making into bows that you can sell in order to buy decent bow wood.