You should definitely verify your clicks.....it amazes me that folks seem to believe that their scope tracks correctly just cause its brand X......
The first thing we do is verify our scopes, here's a picture of a recent test of my buddies night force NXS scope.
This is from an extremely accurate 6.5 creedmoor rifle, reference the 5 shot group in the orange dot and two shots each at 0, 10, 20 & 30 MOA, notice their position to the lines we measured on the target.......
Is this a bad thing? Are we sending it back and crying about it? Absolutely not, all we do is enter a calibration factor for the scope clicks and continue with our field verification.
In this case using the MV calibration would indicate his rounds have a higher velocity that than they really do.........check your scope, use a chrony for a starting point and most importantly field verify every range you would take a shot at game from.