Is really over penetration a problem? With the average weight of males going over 200 pounds with some over 400. A 380 or Mak round may not deliver the goods in the breadbasket. If I fully penetrate my target, there is no one in the next mile. It is doubtful that I will be called on to use any round for self defense but if I need to ventilate a target it might as well bleed from both sides, maybe breaking their spine on the way out.