Hi Matt. On a small target like a groundhog the Mil-Dot ranging system is pretty limited. On the other board, Mr. Thomas once commented to me that your limited to about 300 yds. if I remember correctly. With the 20X set up, it would, of course, work better. However, the laser RF is much faster, easier to use, and much more precise. The only real problem would be false readings due to your target being on the ground. You could get a composite reading, or average, of the ground covered by the laser beam. I suspect that with the quality units, like the Lecia, this won't be a real problem. I should think that some testing would reveal any errors here. Actually, I'm going to buy the Lecia 800, and find out for myself. I'll keep you posted. E