I just put a mil-dot scope on my AR-15. I need to know how to sight it in. Any help would be greatly appreciated. Ive been told if i sight the crosshairs in at 50 yards the top of the first dot will be 75, middle 100, bottom 125, and so on in increments of 25 yards. is this correct. that is how i would like to sight it in of at all possible. I think its called a battlesight zero. Please help if at all possible. Any information is appreciated. Thanks in advance.