Scope moves in the rings or the base is moving, they have proven this. On heavy scopes, I epoxy the base right to the receiver and may tap the screws to 8-40 on non-epoxied bases.
It is wise to spend good money on bases and rings with hard kickers and heavy scopes because stuff does move around!
It is wise to spend good money on bases and rings with hard kickers and heavy scopes because stuff does move around!