Years ago I hafted an antique carving knife blade that had a broken grip, with a deer leg bone. It turned out very similar to yours, although mine has a brass ferrule instead of iron. It has aged beautifully, and is my favorite carving knife. The bone is slick when it gets grease on it from a big roasted turkey, or shoulder roast, and is a little small in diameter for an optimum grip. Very nice work.
Hungry Horse