MC,
I have to agree with that thought of a 6x being a notable advantage. However, the shooting at holes concept is is a common practice. Many benchrest shooters will fire a single shot into a blank piece of paper and then use that hole as a bullseye. The idea of aim small, miss small applies. I have many sub half inch groups shot with a 22-250 high wall and a 24x scope utilizing this method. Obviously a 6x is far less than the 24 I mentioned, but the 6x does give considerable assistance in producing that repeatable sight picture needed for such precise shooting.
SS