The example above of starting at 25 yards with a .22 Hornet served the purpose of getting on the paper. If his target is real, and the rifle is shooting that high at 100 yards, it is way out of bounds for the calculated trajectory, which indicates vertical barrel vibration. After he sights it in at 200 yards or whatever his intended hunting range happens to be, he will be able to record the actual height over and under the point of aim at 150, 100, 50 and 25 yards.
This little test proves our point about why you can't "sight in" at 25 yards, but you should be able to begin there. A rifle that does not shoot near the calculated trajectory needs tuning, or it will likely be limited to only one load, because it will throw other loads to another point.
