Thanks for the comments. I should have said that I stained the belly. It was very light in color.
Randman knows his stuff. The core is not pithy and the grain is very faint but straight and not swirly like OS. The bow is very light in physical weight.
And like Joe says, there is NO set. It would follow the string a little after unstringing but spring back to reflex after an hour.
I had it out of tiller at times and pulled it pretty hard anyway and, had it been VM or oak that i've worked, probably would have set a little. But I'm notorious for working whitewood that is not properly dry too.
Still, I would put this wood up against yew in weight vs. performance. A friend is clearing his entire backyard of hazelnut and plum and I will get it all so I hope to make more of these this year.