Braveheart - Head Is Hurt Before Ball & Chain Hits
At one of the small battle scenes towards the end he runs into a house and kills a man sleeping in bed.If you put the movie on slow motion you can plainly see that the head gets hit and explodes blood before the ball and chain hits it.
It is very common in fact you can see it in another "Mel Gibson kicking British butt" movie the Patriot; only it involves a cannonball and a leg instead of a mace and head.