I found a dead wood, well seasoned piece of black locust 60" long and 6" in diameter at a powerline cut. It split well, has a couple of side to side snakes in both staves (could have got 3 but not 4 staves from this one, but have not figured out how to split a log into thirds yet). I managed to avoid the few worm holes while laying out the rough staves.
The growth rings are quite narrow, leading me to believe this was a limb. After removing punky, half-rotten sapwood, the heartwood is sound and the staves ring like a bell when thumped on concrete. I think the wood is seasoned enough to be made into a bow right away. By the time I get it worked, it will be fully seasoned.
At 60" I am thinking it will be necessary to build a bend-through-the-handle bow for a 28" draw. Question is, with this style, the handle is supposed to be the widest part of the bow, am I right? That would limit the width of the limbs somewhat for comfort- maybe 1 and 1/4 to 1 and 1/2" wide.
Can I put a little "waist" in the handle, widen the limbs at the fades and still have it bend a little in the handle (but controlled) by increasing the thickness there judiciously? Does anyone have a bow like this they can show me?