You can adjust the zero point on your scope if you're using a sniper rifle. So if it's set on 200, your cross hairs will be dead on at 200 yards.
Basically helps to take some of the guesswork out of long range shots since you won't have to gauge the distance as much.
Real men snipe with their LMGs though. And by snipe I mean spray bullets wildly and hope the muzzle drift ends up giving you a headshot.
XI Wiki


