I use 8, and the problem is that the stormwind doesn't turn enough. The radar missile works by: Firing Getting a lock Finding the plane's velocity vector Aiming at the vector (chaff will remove the lock, with enough it will confuse the missile(that is like 10 pods)) If the plane doesn't turn then the missile explodes where it predicted the plane to be and thus where it is If it doesn't turn enough, the blast gets the plane with a significant direction change, the vector isn't picked up again if chaff is deployed the missile then misses.