bassmaster, are you dead on the bull at 100 yards? If so, there is no way a .270 SHOULD be 2-3" high at 25 yards.
Something is not computing. The arc of the trajectory should be very flat and your rise above line of sight should never be that much at any distance with a 100 yard zero. If anything, I would have expected POI to be a little low at 25 yards.