I used it for years with no problems at all but most of my stands were limited to 25 yards visibility. Last year in 2 different areas it cost me two shots. The first was in a ground blind, doe at 40 yards (site set at 20) but I didnt have enough light inside to see what the tape read to change it before she walked off. The second was in a stand where I could see pretty far, had a decent buck come in around 45 yards but he had me pegged and again I couldn't adjust the sight without being totally busted. I ended up buying a 5 pin Spot Hogg Grinder sight.