I have my doubts on the ball improving expansion. My guess would be that one would see less expansion to poor performance but in experimental work; one moves in steps. Ron found a way to improve BC. Step one. One really need a pointed collapsing medium in that big cavity that would add to flight profile but collapse back to expose the hp on a rib shot. We can look to Hornady and others for the design shape. Bubba has to work with what he has.
