1)Open your editor.
2)Press F1 if not defaulted, clicked randomly on your map, choose AAF
3)Choose Armour, place an AAF MBT-52, player as commander
4)preview
5)switch to driver seat, find a decent place that have great distance and object for testing.
6)switch to the gunner.
7)Aim at random object and shoot it with different zeroing.
8)Try something like 100m zeroing shooting object up to 1000m
*Remember don't use auto zeroing system.