Jayman,
You dont say which type of ash that you have, and there is a wide variance between the 5 common species. (Black, Blue,Green, Oregon, and white). If you are using white then the SG @ 12% is .60, with green just behind @ .56 and oregon @ .55........the black ash is .49
I have made wide flat bows, square section bows and Mollegabets from white ash. A side note would be that black ash is my favorite arrow wood. I believe that you could make most any type of bow from white ash as long as you tiller properly and carefully. Just one guys opinion though.
rich