WEll I have done the best I could with the sudo smeared instructions I got with my Wild. Initially I calibrated it to 400 meters as that is about all I had room to do. This worked out pretty well but there was some error on the longer ranges. This past weekend we had a laser surveying system out checking and verifying our target distances as well as plotting some future hunting positions. This thing gets it down to the .01 of an inch or closer depending on where you want the decimal point. WEll while we had it out I decided to check out the Wild against this thing. WEll I can say that for some old milsurp tired iron, it did pretty good. The first check we did was at a mile. It came in about 200 yds short of what it should have read. So we calibrated it to a 1600 meter distance, and rechecked it again. This time it was only 23' short of what it should have been. This could be either of us not seeing things the same or reading the dial correctly as it fell between two different lines. Upon checking the 500 yd flange we hung out we found it to be only a few feet off. Either way, it should be good to go from now on out. Now the question, was it better to have calibrated this thing at the furtherest distance we could have for the best accuracy, or should we have dialed it in on something closer? WE might go back with the laser system again later on, but the limiting factor with the Wild was being able to see the pole we were using to calibrate it. Next time though we can use a larger diameter pipe than the one we had.