I have used the LabRadar exclusively the last two years and the results have been pretty spot on. I can only practice out to 600 yards consistently as that is the farthest our local range goes to but the data has been solid and the shooting I do in the field when I get bored and pick out objects in the distance that need to be shot at, has been good to as far as about 1400 yards. I have done some BC adjustments to my ballistic program but the velocities have been good. I also have a Oehler that I occasionally set up when I have the time and they match up within a few FPS every time.