I recently mounted a Burris 3-12X pistol scope on the built-in rail on my M1A Scout Squad, but have been having problems with it shooting something like a foot high at 25 yards! I've put a couple of brass shims under the scope on the front ring, so I can zero it, but the scope is still run up to almost its maximum elevation.
I tried reversing the rings, thinking one might be slightly shorter, without any change. Since the Burris pistol scopes are the same as their long eye-relief scout scopes, I wouldn't think the scope was off spec.
Has anyone else had this problem with the scout mount? Could it be that I got one that's out of spec?
Would appreciate some sage advice. I've mounted scopes before, but never a scout scope.
First thing I would try is different rings. If that didn't help I would check a different optic. I would check how the mount is set to the barrel, and this is most likely the culprit. And finally I would check to see how the action is sitting within the stock.