Gun convergence on Bf 109

[VO101_Tom]

Originally Posted by lonewulf

Sorry, none of the above helps me. I'm still not getting it I'm afraid.

vertical convergence == 400 m (Visierschuss)
horizontal convergence == 420 m (Kreuzung)

Ok, as an example, let's use the values listed above. But before that can I just stress that we are only concerned with convergence here, not burn-out and not fusing.
....

I think you mixing things.
Vertical convergence means the distance, when the bullet trajectory will crossing the center of the revi sight.
Horizontal convergence means the horizontal alignment relative to the center line of the Revi.
If the two value is different, then you see the bullet crossing the revi center in vertical, it have differences in horizontal:

this is what you get, if the setting:
MG17 - 400m hor. 400m vert.
MG FF - 200m hor. 400m. vert.

200m:


400m