I also started in the middle of the speed adjustment slot and had to move it down but its not bottomed out. I am shooting about 260fps and am good to 35 yards and once I adjusted the sight pin had no problems with shots less than 10 yards. There might be a little more set up work involved with this sight but it is worth it because of its accuracy, brightness and how quiet it is. I also noticed how lineing up my pee with the round glow gard has helped my shooting form, I get tighter left-right groups because I do not torque my bow as much. I have no problems shooting from 15 to 25 foot hights(sight in from about 20 feet). I want to strech the shooting distance out to 40 or 45 yards in the next few weeks just to see if the sight can handle it (0-45), I do not think so because my bow is not that fast. I will let you know.