Vehicle aiming offset (with video)

[2rmina2r 10]

Hey all, I have this problem with my vehicles, where none of the weapons actually hit the center of the crosshair, and some are way off on zeroing.

Now for Coaxial weapons like LMG's on tanks and such I can understand that bullets can hit offset, but for the main gun to do the same I find strange.

I made this quick video displaying my problem, does anyone have a solution or just an explanation? :)