I cut some dead locust yesterday that had been laying on the ground for about 4 or five years. I got about six logs around 10 to 12 inches. I may get 5 or six bow staves out of the bunch maybe one or two more if I'm lucky. It is riddled with grubs, other than the grubs it looks pretty mo delaminating or the such just alot of worm holes.
I needed some dried wood so I went ahead and got it. I'm gonna go back and cut some green and let it season but I guess if your need of some dry wood you could get what you can.
I do plan on going after some dry osage that's been laying I think it'll be allright, Might be a little wormy but I'm sure they don't go past the first ring or so on it.