that looks exactly like the oak tree in my yard, I do believe its shingle oak, I know its not ash because I have 4 ash trees , I also have lots of osage trees around and their leaves or more ovate than that . I always thought my oak trees bark looked Identicle to osage bark aswell. I am about 80% its a type of oak , Im gonna say shingle oak like the one in my yard. Only a few oak trees have this oval type leaf most are lobed. Well anyway I hope you make a bow or try this wood because I have wondered what type of bow this type of oak would yeild ya allready harvested it, no need to not try her out. Best of luck to ya.