Krisken, I don' t disagree as I said earlier. You have mass, you have Kinetic, you have momentum and you get penetration; it works for you so use it.

The only place I disagree is the term " Speed is all you need! (?)" You need some combination of both mass and speed. So it is the term that is not correct.

I' d rather be hunting but a lively debate helps pass the time.