This target's grouping score is:
Average Distance to Center of Mass:
First, enter in the first box how many minutes of angle your calibration marks denote. Remember, 2" at 50 yards is 4 MOA, 2" at 100 yards is 2 MOA.
Next, click on each of your two calibration marks.
Then, click at the center of each spot in the target where a bullet passed through. The order in which you do this doesn't matter.
Once all shots have been clicked (up to 10), click "Calculate".
If at some point you make a mistake, click "Reset" and start over by clicking your calibration marks again, then on to your shots.