Really depends on what I'm flying...if it's a 50cal plane, I know I have smaller guns but faster ROF, therefore I drop from the high six. If I have a 20mm or 4, I might come from high right or high left for strafing runs, as the bigger gun will make it easier on you, if you have good aim. As for 30mm and 37mm cannons...well...since you don't have a lot of rounds (on most planes with the tater) I try to get 3K in front of him and dive on his high 12, fire 4 or 5 taters at the cockpit, pull up and get 2 or 3K back, and get in front of him, and do it again.