Chain fire= full auto. You don't want your hand under the mag becuase it doesn't do #### for recoil control, which is a huge aspect of controling a hand gun if it decides to burst on you. You can use that same mentality to say never fire the gun strong hand only or weak hand only. The best reason to not hold the bottom of the mag with your weak hand is that it does nothing for recoil control. In a correct 2 hand grip your weak hand should have more pressure on the gun then your stong hand so your trigger finger can more more freely. this can't happen if you barely have any grip on the gun. If you can't remove your stong hand from a 2 handed grip without droping the gun the grip is incorrect. To demonstrate the grip pressure to trigger finger movement I stated above make a first with your hand leaving your index finger out. Now squeeze your hand as hand as possible and see how quickly you can move you index finger at the same time. Now commpare that to only using enough pressure to keep the fist formed. Trigger speed may not be an issue to you but a smooth trigger press is important to any shooter and you can move the finger far smoother with less grip pressure. If you don't beleive me then check out the first 2 videos of Todd Jarrett at this link http://video.google.ca/videosearch?q=todd+jarrett


















































