To verify gun and ammunition combination is shooting point-‐of-‐aim (POA) to point-‐of-‐impact (POI), by shooting a group on a specific spot. To verify basic mechanics on the process of sight and trigger management. Once you verify the gun is zeroed with the ammunition you are training with, analysis of other training factors is easier (i.e. you don’t blame the gun for a bad shot). This five shot group should also be shot with your defensive ammunition on a regular basis.