Personally I am not interested in any of the sprcialized to round raticals. At 1 time I was about to get a blastic ratical for my 22-6mm, but since they are only good for 1 BC at 1 velocity I desided against it. I perfer target knobs and mil dots. First of all you need a good range finder befor any long range shooting is rally practical. So once I range the target I dial in the elevation instead of figureing which line in the scope to use. I use the mil dots for wind drift and lead on moveing targets. Just the way I do things. PS If you can`t find a 3 1/2 x 10 with target knobs I did find a pair of target knobs that screw onto a Leupold scope at Cabelas afew years back, I use them as elevation knobs 2 - 6 1/2 x 20`s instead of putting them both one one scope.