I split the stave you gave me,, it split very nice,, I am in the process of making a bow from the unuseable heartwood as we speak, it was from the belly split,, have one layer of sinew on it, as Pat mentioned it should be good for the belly,, I hope,,
I used alot of hickory when I lived in Tennessee,, I used heartwood and sapwood with positive results,, and did see alot of trees that looked like your stave,,and I made alot of board bows as well,,