if your bullet drops 5 inched at 25 yards(for example) and you adjust the sights for this to zero at 25 yards then you turn the gun side ways(tilt to the left) and shoot You should be now shooting to the left off target and the bullet should be shooting low as before. So how is
going to work? Bullet drop corections up and down do not stay the same sideways, you cant argue physics.this is not true...you can hold gun gangsta style and upside down and if you use sights you will hit with no adjustment to sights...I don't know the specifics with using miror over shoulder.