In lesser known bow woods, in section about elder they mention "treat it as a light yew", so it seems that is one good school of thought. Although it probably can't survive "D" shape.
Thanks, Jonas, I'll see tomorrow what I am dealing with, all I know was that my dad told me its big elder, and straight. We'll see if he lied!
I could put a picture of trunk here if you don't mind when I cut it so maybe you can see from picture is it good or not?