Mechanically/physically mounting the scope higher will not have a technical impact on accuracy but it might have a practical effect. That lack of cheek weld will induce parallax effects. Don't know what scope you have but it probably doesn't have an adjustable objective (AO allows you to put the crosshair in the same plane as the target at a dialed in distance). So without AO your scope is preset for parallax at some distance, maybe 150yds. If so, at 150yds your eye can move all around in the scope eyepiece and the crosshairs will stay centered on the target if the gun isn't moving, crosshair and target are projected in the same plane, like the crosshair is painted on the target. But at 50 yards unless your eye is in perfect alignment with the physical position of the crosshair and the target your impact will be off even if the crosshair is on the target. The crosshair and the target are now in 2 different planes. In other words if your eye is not centered you are going to compensate by moving the crosshair onto the target which will be moving the bullet off the target.
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