I bought on from Cabelas last year and it worked ok. It was ok at 20 yards. I think there is a lot of things that can change where the arrow hits. Like how high up the tree you are. Down hill vs. uphill shots..ect..ect.. The one I had made a lot of noise on the shot. Went back to my pins.If u want my 2 cents, get better at range estimation and practice pratice practice....good luck