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Assuming it is actually milled central and square to the bore.

The more shit between the scope and action the more POTENTIAL error here, not saying it will but rails qd mounts etc have the POTENTIAL to move scope off centerline which is actually an entirely...

I alluded to this on another thread a while back,Norways?
where scope is deliberately canted to suit natural hold etc, while Im sure its a negligible error(in most cases) I dont recall if I got an...