I bought a POSP 3-9x42 w/ 1000 Meter Rangefinder Rifle Scope but found there wasn't enough I relief for a 308 recoil. I put it on my Saiga 223 but I have an issue of sighting it in. The scope with factory slide does not center over the barrel and sits left towards the slide mount side. i am not sure if I am doing something wrong but I just can't get it sighted in with the way it fits. I bought it at http://www.kalinkaoptics.com/detail.aspx?ID=93