With modern Drop-Compensating scopes, an Anti-Cant Indicator is a necessity.
The Wheeler Anti-Cant Indicator ensures that your rifle is always held near perfectly vertical, eliminating any chance for cant-error to cause a miss. Wheeler Engineering Anti-Cant Indicator, 30mm Wheeler Engineering Anti-Cant Indicator, 30mm Crafted from machined aluminum with an anodized finish Indicates precise, repeatable level gun position Increases accuracy by insuring proper gun alignment, which is critical for turret adjustment and hold over for bullet drop compensation Easy-to-view from shooting position Attaches to scope, folds in when not in use Precision machined aluminum with anodized finish Keeping your scope perfectly aligned is critical to long-range accuracy. Canting your scope, even just a couple of degrees, can cause error in point of impact.