Jamdon,
I do not think shooting at known distances the scope height is important. For unknown distances like Field Target. I have heard lower is better for some reason. I really do not know why. I posted that the lower the scope the more distance in the point blank area 17.4 to 40.5 yards for my .177 shooting 905 fps, with a scope height of 1.75 inches. I was wrong at least according to the chair gun program. It shows that a height of 2.0 inches would increase the point blank area to 18.6 to 43 yards. Point blank is the yardage where one could hold center of mass and expect to hit a .5 inch circle without holdover or under. Not a hunter, but a rabbit in that point blank with a center of the head shot is a dead wabbit.
Bob