I lived in Maine until just over three years ago when I moved here to western KY. Black locust was the best bow wood I had in Maine. I always made "pyramid" style bows and chrysalling was not a problem. A bow tapered only in width and of uniform thickness in the limbs comes off the band saw with a nearly perfect tiller. All the wood is equally strained except for differences in the wood itself. Those differences do make a little fine tuning necessary.
One of my bows was over strained, but because of the pyramid design, it was still equally strained. It had chrysals from end to end, but shot fine and only broke when I accidentally overdrew it after about a year of shooting.
Back locust is great bow wood. I use hickory and elm more now, but only because those are so easy to get on my own land.
Jim Davis