Mozambique Drill= 2 to the chest, one to the head. I think the term comes from the African bush wars of the 60s and 70s.
In formal firearms training environments it's called failure-to-stop. It's part of our police qualification course at 2 and 7 yards and is shot from both the holster and guard positions.
Herman Cain '12
Squished bugs on a windshield is proof the slow/heavy bullet theory works.