Years ago, I bought my FIRST AO scope, Leupold 12x that I put on a 220 Swift varmint rifle. Went out to shoot prairie dogs one afternoon. Never could get a clear picture out of it. Boy was I pissed! Headed back home intending to send it back to Leupold. Was in the process of dictating the letter, describing the scope to myself in my head. Got to "Leupold, 12x, adjustable objective........DUH!!! Turned around, went back a couple of miles to the prairie dog town. Tried it again, WOW. That was probably the best scope I've ever had on a rifle, LOL! Of course I was an idiot AGAIN and later sold the rifle and scope. That said, I think the AO type scopes really shine on the higher power, varmint/target type scopes. Greg