Are you hunting horses where you live?

Look like you have done some serius testing thats for sure, now you only need to get a heavy NE DR and do it all over again.

But it would be wery interesting to see somethink like your tests but with a hard material simulating the skull in an angle before the media. Anyone?

Beside that i think its easy to calculate the shock, fire the guns and the one that gives you the worst bruse thats the one that causes the gratest shock in the other end.