If you're going to go through the box test, make sure you dial in at least 5 mils/20 MOA per side. That will be the surest way to determine if your scope is tracking via the turret input. The tall target test reveals two facets of the scope. It will show you if you're scope is tracking straight when you run the elevation up, and if your rifle is accurate enough, and you're capable enough, it will show the actual change in Point Of Impact (POI). The Tall Target Test also reveals flat spots in your adjustment range, where adjusting the turret does not move the reticle, or moves it less than your input called for.


If you have a Mil/Mil scope, each mil at 100 yards is 3.6". If you have a true MOA/MOA scope, one MOA is 1.047". There are also scopes on the market that are labeled "IPHY", or Inches Per one Hundred Yards. If you have IPHY 1/4" clicks, then 4 clicks (at a 100 yard target) should show a (POI) change of 1" rather than the MOA which is 1.047" at 100 yards. In the real world the difference between MOA and IPHY is negligible. Where it becomes important is when you are shooting long ranges (1000 yards and beyond).