David, I will respectfully disagree with you. At the moment I carry 1 extra mag and the one in the gun. If I ever get into a fight(God forbid!!!!) and I let off a few rounds, I will want to go back to my 9 rounds like I did at the start(8 in mag+1 in chamber)
From everything I have ever heard, you don't remember how many rounds you shoot when your braindead in a fight. I trust that is true, and will prepare for such.
I got my 4th mag today. Woot, will carry 3 extra now, maybe 2 depending on what I feel like
Oh yea, I am dry firing the whole time, not actually rounds...snap caps and empty mags just like suggested.