you need to
Reverse the horizontal and vertical convergences in game. The game has them around the wrong way.
This is already reversed, so enter it exactly as specified: It works quite well:
Outboard (guns 1 and
: 300 vert and 120 hor
Guns 2 and 7: 300 and 268
Guns 3 and 6: 370 and 370
Inboard (Guns 4 and 5): 342 and 275
I just tested the above with tracers in all 8 guns. Gives a good cone of fire out to fairly long range.