I tested Ripsnorts 1.5K - 1.0K tactic, but did it at 900. A full load of F4UC ammo (minus the misses at that great distance) caught 2 engines on fire, then it flew away. And yes I have film.
However, I took a shot with a 190 at another, distance 300 and the Buff vaporized with a 1 sec burst. I pulled the trigger..Boom. Maybe it should, hell i don't know.
I do know a B17 is absolutley DEAD in AH if 2 fighters attack one working together. You simply can't get hit from 3 AND 9 Oclock high and defend two fighters that slice down, holding their shots to 400 like they should. (Also, turrets seem really slow when tracking bandits in this situation!)
Buffs need more gunners, cuz they are damn near defensless. I prefer they be human, but unclear of the logistics in coding that.