I agree with this. Ranging gets a lot better when you tripod mount them. I have my rangefinder mounted on my glass on a tripod. When I see something it is a matter of looking into rangefinder and pushing the button. I had a Swarovski and it worked well most times to around 1500 yards. Then I got a Terrapin and it is good to 2000 plus on most days. Most of the rangefinders suffer in snow, rain and fog. MattAfter decades of shooting I still avidly read those scientific tests done by experts I don't know. However I call it the way I see it. We're talking 800 yards but most use will be 300 to 500 I would bet. Using off hand is for bow hunters. Trying to range far prairie dogs off hand is an exercise of frustration.