Those bullets appear to have a lot of potential. My only concern is the lack of expansion from the WW alloy. (I know a .50 cal hole through the lungs will work but....) The alloy used would be sufficient for cape buffalo or even elephant with the penetration you get with them!
But we don't have many of those running around these parts..lol.
I bet casting them with pure lead would allow them to be just as accurate with more expansion and less penetration but enough to give you complete pass thrus on any whitetail or elk.
Good report Ron and nice bullet Screw.