Hickory needs to be dryer than the other woods for top performance. Osage, walnut or oak is dried down to 8%-10% moisture content to be dry enough but not too dry to be brittle. But Hickory needs to be 7% down to 6% not to be too dry. But if you dry it down it flips an arrow out very well. SW Ohio is a humid place but once sealed well I've not notice the hickory bows I've made suck up moisture. It is a good wood for heat treating, too.
I've used pignut but shagbark can work, too.
I just built a custom jamb for a door installation, yesterday, out of left over hickory heart wood I had on hand. That was the last straw for the Delta planner's belt pully! (that's going to cost some bucks to replace) But, it sure made an impressively strong jamb to bolt the security door to.
Working with it makes me want to scrape out another bow from the few clean boards I have left.