When was he firing that shotgun? I know it must be from a deleted scene, possibly when he hunts down the bodyguard, but I thought they just blew up that guy's car.
According to Lebo's book, the scene was just so bloody it didn't work well and they scrapped it. I imagine the print was destroyed because I'm sure it would have ended up in a dvd by now.
The car bombing was in another deleted scene from Part II.