Not really, they are sorta bore sighted, sometimes you get this great target in the box, just try and duplicate it sometime!!

Truth be that everyones eyes are different, everyone holds a gun different and this can cause some variation in group placement and a inch at 100 is 2"s at 200 and 3" at 300 and so on, then add your personal wiggle and wobble to this difference and everything goes to hell in a handbasket!