I agree with BradyT88, I too have very little trouble with my inexpensive Caldwell chrono. I just can't justify the cost of the Lab Radar and some of my guns shoot at velocities outside of it's capabilities from what I understand. I to do not like the idea of having to choose between checking velocity and shooting groups (always seems to be my primary focus on range day) with the Magneto Speed. Well stated BradyT88!