You will have to pardon two things. First and foremost, the target area overflying (you should never do that) and the sound of the video likely going mute (it includes a music track from the movie "Lone Survivor", wonderful music) in the near future.
What I want to show is two gun kills. The first one (target is a missile launcher) is after a prolonged climb and later diving to shoot at a high angle (50 degrees, compare to the recommended 30 degrees dive). The second one is after a loop, diving at 24 degrees. The second kill after the loop allows to initiate the attack from a low altitude and is actually an attack tactic practiced by the Soviets in the Cold War years.
I strongly recommend to watch this in YouTube for a high definition version.