After drawing a crosshair on my screen with a pen on clear tape (because there was no crosshair that i liked),
i realized that the greendot of the engineergun and the dot of covops sniper are not quite in the middle of the screen for me.
They are both a bit (few pixels) off to the upper left, but point exactly where the guns are shooting (tried that out at the corner of a wall).
I wanted to get a screenshot of that, but the when aiming down the sights, the dots seem to end up perfectly where the previous crosshair pointed at.
Don´t really understand how that works… 
