David, I noticed that the 1911 is the only gun you shot that you did not change your grip at all on while in the process of doing the mag dumps. You came close witht he Beretta, but it did shift a little.

The Glock . . . your thumbs went crazy. I thought they were going to tie themselves in a knott. When you let your thumbs cross like that it creates space between the pistol and your hand making it more difficult to control and all together just adding difficulty keeping the gun on target from shot to shot.