I’ve noticed that the gun when at 12:00 sometimes jumps straight up…or as high as it can go. Move the gun left or right, and it drops back to its normal depression. This only occurs when the tank is on a slope or at an angle…not when on flat ground.
Have you considered the Ikv 91-105’s chassis construction with that small slope in the driver’s side?
That’s is something that mess with the depression.
The gun can’t depress fully over the driver hatch, not enough space for the mantlet. So when you rotate the turret around, it sometimes has to stop and elevate upwards.