The Group Sizing feature actively calculates your group size with each new shot marker that you place. For the feature to work correctly, you must know the distance between two set points on your target and input that information into the app when you turn Group Sizing mode on. It is recommended that you use two corners of your target as reference points for this measurement and input. After inputting a reference distance, the app will begin to calculate the distance between your two furthest shots from each group.
