This should give you an idea of my setup in relation to the bore center and fixed sight height. I have a custom guild smith model 70 that was fit to my dimensions having a similar stock profile. That rifle has custom QD mounts to set the optical center of my scope tube a measured 1.55" above the bore centerline over the chamber. The difference in height between that custom fit M70 and this out the box Sako is only .09", so for me, the out the box Sako is almost a custom made fit using the out the box Optilock ringmounts.