be it manually like other weapon systems like on ground vehicles with pg up/down or automagicly via laser when looking at something the cannons on both airframes should be able to be zeroable to distances.
Currently anything beyond 1000m requires the gunner to aim up above the target to hit anything
I noticed that the Mi-48 gunner has the option to set the distance - just use the default keys for that. But there is no indicator for this setup.
Therefore you're right and it should be fixed.
Mass closing ancient tickets with no activity for > 12 months; assume fixed or too trivial.
If this issue is still relevant in current dev build, please re-post.