I bought some Osage from a local a few years ago that used to make bows many years ago, he got it from his brother in-law in Southern Ontario that had some growing on his property. The wood is about 20 years old and it was the sawn quarters of a log that looked to be cut from an 8" or 10" tree. The stuff was a bit gnarly, probably why he didn't use much of it. I managed to get a decent stave out of one of the quarters and made this bow out of it.
The wood is fairly fine grained and the bow has a bit if character to it with the top limb being a bit concave on the back and the lower fairly well crowned. I tillered the bow with a shallow D section limbs to take some strain from the back and it turned out well. The bow is 64" long overall with limbs 1 3/8" wide tapering to 3/8" nocks. I tillered it out to 50# @ 28". I didn't do any heat modifications to the bow and even though it's fairly short it didn't take hardly any set at all. I guess Canadian Osage is pretty good stuff. Now I just need to find some that is not so gnarly