Shotgun Joe's advice is already under discussion in another thread here: http://thefiringline.com/forums/showthread.php?t=517259
Let's confine our discussion of this to one thread, shall we?
A gunfight is not the time to learn new skills.
If you ever have a real need for more than a couple of magazines, your problem is not a shortage of magazines. It's a shortage of people on your side of the argument. -- Art Eatman