Krusty,
In the FW190 armeror's manual the line of sight for the Revi is level to the horizon. The wing cannons are adjusted to fire upwards to cross the LOS at about 150m to drop back into it at about 550m. Both the MG and cannon fire upwards converging above the LOS at about +45cm GLOS. The MG drop back to the GLOS at 400m. All of the 109 family the GLOS is angled down from +74.5-82cm depending on the model along the hood to a point 400m out in line with the aircrafts CL. The MG and any gondola are set to arch along with the fixed motorkanon to pattern at 400m. HiTech lets us pivot the motorkanon in his game.
The P47 and P51 the GLOS was level and the 50cals shot up to and above the GLOS at about 300 yards dropping back close to 1000. The steams crossed at about 300-350.
Go offline and test that with the 190 or 51. LOS from the center of the gunsight angles down below the target center. You can graph it with what I outlined. Any primary gun at any convergence will never fire above the GLOS. They will only fire to it at the covergence you set. The gunsight LOS is tied to the primary guns convergence IP. If I remember correctly when I mapped 9 common fighters in the game. The GLOS gets lower on the target as you move the convergence out. But the primary gun(s) never fire above the GLOS. Only hood MG ,,,and I think the hood cannon on the Ki61 does.....
You can go as far as I did and make a 5mil waffle grid inside of a 100mil circle and do the mapping on full zoom. I set cov at 150, 400 and 600 for the 6 aircraft and mapped the GLOS along with impact dispersion clouds at 200, 400 and 600. Don't remember the primary gun IP going above the graticule center. Came to the conclusion HiTech auto tilts the gunsight LOS for us when we change convergence in the hanger.
Krusty instead of dismissing me do the same test offline I did with different fighters. Put a 5mil grid in a circle. I used the 51D, K4, Yak9T, spit16, I16, FW190D-9, 109G-2, Fw190A-8 and Yak9U. Cyan shows up best against the white of the target.