I took out the gun I plan on using for opening day of our deer season, hooked that iris on my glasses, loaded up, mentioned to a guy that just showed up, first shot, cold bore, its the only one that counts. After the report, I flipped it up out of the way, and could see the hole in the bulls eye at one hundred yards. Its a keeper Harry. I will probably try to come up with a better mounting system, but overall I'm very happy with it.
Robby