I purchased the IOR Recon at the Tulsa Gun Show from Val who is the importer of IOR scopes. Put it on a 308 a couple of weeks ago and sight it in at 100 and200 yards. Sunday we had a shoot that we fire 5 rounds each from 2, 3, 4, 5 and 600 yards. A couple of the other guys looked through it and could not believe how big the sight picture was through that 40mm tube. I was shooting with it set about 24 power all the way back to 600 and could see the holes in the white center all the way back to 600.I had a shot at 500 that split the white and black ring and I could see it. At any of the yardage the sight picture was just as clear at the edges as it was in the center. As for the turrets the clicks were crisp and solid. The light transmission is better than the 30mm tube 56mm objective scopes that I have. I do not know what else to say, I'm not the person that should be doing a review on a scope. Anyone thinking of getting the IOR Recon will not be disappointed when they get it. It is more scope than I should be allowed to own. BIll