Generally speaking, trying to set and shoot cannons much beyond 300 is not going to work well.
Yeah I made a few 600 Sprays and obviously ended up no good, straight and level you have a shot to ding up a plane but nothing fancy,
I try to end up on a deflection shot around when target changes from 400 to 200. But I still am having problem learning the balistics.
From what I gather so far -
German Mk108 is by far the worse, best set for 250
Russian 20mm - 250
Japanese HO-5 best set for 250-275
German Mg-151 best set for 300
German 13mm best set for 300
Japanese 13mm - 300
American 50 cal - 350
American M2 - 350
British Hispanos - 350
British 303 - 250
Is this roughly a ballpark figure? I would like to write this down once finished so I can change the planes accordingly, another question is on the convergence of for example the 6x50 cals, Would I have all guys aimed at 350 (example) or do I stack 300/325/350?
I would assume to have all guns set for the same convergence, only plane I can think that would require more then one convergence is the P47 based on the 8x50s, but I haven't flown a Jug really to know this.