Not bad at all Van. First off - good report and good shooting.
Here's my thoughts. It could be thatmaybe Mr. Sholtz (?) was right on the weighing. Not so much with the weight as to how it affects accuracy, but where the "void" is. Those "flyers" may have been attributed to a void near the edge of the casted ball causing it to rotate abnormally. I guess the location of the void is a factor also. I think a void 90 degrees from the bore would causemore erratic accuracy than a void along the center axis of the bore.
In any event, IMO the gain is not worth the effort. Either one of those balls would have ruined any deer, bear or hog's day.
NOW QUIT PLAYING WITH MY BALLS.