Sorry I' m a little late to this one but I to own A Preditor IV and love it . Like Toytaco has been saying follow the directions!!! They seem difficult but their really not so bad. I had a Keller and found the Preditor to be easyer to see in low light and soooo much quieter. As for Savage, herd good things about them but have never owned one. I will say this with the adjustments on the Preditor I shoot from 0 to almost 40 yards 15-25 feet up DEAD ON!