the problem with the 30mm is not learning it, its unlearning it. Once you get used to the 30mm - you overshoot with every other gun, lead too much, and fly your plane for the roll-over snap shot (instead of saddling like with most planes). So once you master the 30mm, you know you are sorta screwed unless you are one of the naturals that seem to be able to switch planes and wepons and still pull of lots of wins.