I usually fly the 109G-10 with the 30mm cannon, and at the angles I approach from, I have to get real close before I fire. The dead six approach would of course be suicide, and any time you get within 600 of a bomber group, you better have an approach other than straight in, or your asking to get swatted out of the sky. I think I have seen this a time or two as I fired at the lead bomber, one of the drones also exploded as I passed through the formation. There is no way I could begin to figure out how to make it happen on purpose, but I would not be suprised to know that someone else has.