Right, I have set up my guns to match your 300m convergence suggestion, that is:
Outboard (guns 1 and
: 120m vert 300m hor
Guns 2 and 7: 268m and 300m
Guns 3 and 6: 265m and 370m
Inboard (Guns 4 and 5):275m and 342m
I have NOT yet corrected for yards, but I will test at m first, just to see if the difference is noticeable