Seems like there is a rule of thumb regarding groups. All factors being consistent in case prep, loads, OAL, etc., is there a rule of thumb to use for tightening up groups? If memory serves correctly, one can try OAL adjustments or powder adjustments if a clover-leaf group is a bit large. And an adjustment if there is an occasional flier in an otherwise tight group. Is there actually this "Rule of Thumb", or have I just been dreaming?