+1 what Marine said--I have 3 SWFA SS fixed mag scopes--in the price range "nothing else comes even close." I have a 16x sitting atop my LRT SASS. They actually all have parallax correction--it's just that it is in-line with the ocular as opposed to being "side focus." The mil-mil reticle is one of the best ones I've ever seen on any scope at any price! You're going to need that 20 mil rail if you're going to be rain-bowing that 308 out there.