Flying the 110 in intercept missions against 6 Walruses(yes I am a bastard), and I can tell you that changing the convergence settings and the type of rounds makes a HUGE difference to the effectiveness to the maybe one second window of effective target acquisition you get flying this game
Its hard to get your pipper on target in this game, so when you do, you need to make sure the rounds that hit the target are going to cripple it or hopefully destroy it
I have gone from spending 20 minutes getting minor damage on targets at first, to now knocking down 6 Walruses in about ten minutes, sometimes destroying two at a time, because I changed my ammo load-out and convergence