I don't agree TB. The whole idea of Neri posing as a cop was so he could hit Barzini in the open which was probably the only place they could get to him. Also, that's a realtively close range for a police pistol. Neri was a weapons-trained cop and he took his time to fire the shots. All were in the upper back and would have more than likely penetrated vital organs. Also, we don't know what ammunition he fired, but I'll bet it would have been the most devastating stuff.