nsherve....Seems there are a number of woods that do duel duty[arrow shafts and bows] in the archery world.Some like hickory are great or handles too.I can only speak for my local woods here experimenting with them.Split timber type shafts though.The list is rather long.Hickory,black & honey locust,walnut,oak,ash,& maple to begin with.I've yet to try hackberry or KCT for arrow shafts but they might work well too.
Ironically the local osage the best bow wood here does not please me for arrow shafts.A combination of too elastic and dense making it non suitable for me.
I agree with you about the shoot shafts though.I love shooting my dogwoods,plum,and multi-flora-rose shafts.It's easier to find these for arrow shafts than using shoots from trees for me.
All you can do is try the hornbeam for shafts and see what it makes and shoots like.