Example of one, but my K31 shoots an inch or so low and left for me at 100 yards with Swiss military ammo, and the rear sight set on "1". I seem to recall the 1 means 100 meters, not yards, but am not totally sure if my memory's correct, especially at this point in life.
I would, however, bet the 2 setting would be pretty close at 200 yards as well.
