To begin, what a great discussion from a great group of folks on the AR-180!
I wanted to reach-out to 300+ yards with my Sterling, and found a perfectly engineered B-Square mount, to which I fitted a Bushnell Sportview 45 (3.5-10 vari).
The B-Square design allows full use of the peep / post sights with the scope fitted.
8" plates don't stand a chance now
Happy New Year to all!