Only one thing you can do with a stave like that-send it out west for safe keeping.
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. I did a bow out of its out of Utah juniper, which is somewhat different, albeit with some milar qualities. I was still a novice at the time, but even though the tiller isn't perfect, and my sinew job reflected my inexperience, it will take a radical amount of bend, and still hold up. I would have it.
I also have some nice prepared sinew if you want to work a trade.