The scenario is this: Center of bore is -1.5" below line of sight and rifle shoots 3" high at 100yds and is dead on at 300yds. OK, typical sight in. Now, same rifle, but with open sights. The center of bore now is -1" below line of sight. So for this scenario to be dead on at 300 yds, would the 100yd elevation be higher or lower than 3"? It seems to me that it should be lower, because one is starting out .5" higher to begin with. Is this wrong? Seems that the only info available (that I have) all start with -1.5". Thanks.