So I have a few military rifles (3, and getting another one soon), and I've read and been told that the military used to zero them to about 300m/y, depending on which country/model/etc, for use in battle, which is fine and understandable, the point being that you should be aiming at centre mass and be able to hit an enemy soldier from short range all the way to 300m. Makes sense
The question is: If the rifles are zeroed at 300, why even have a 100m marking on the rear sight? and if I move the sight to say, the 200m mark, will the rifle shoot at 400m? Why not just have the 1st setting on your rear sight at 300, and go from then? Been thinking about this for a long while now and I cant really find a good answer for it, so please help guys?