All good points SHOOTALL. One must learn the difference in CONCEALMENT, and COVER. One will not stop a bullet, the other HOPEFULLY will. The gun range mentallity is to stand there and shoot it out. This works great when your opponent is paper, and much philosophy can be produced on FICTIONAL INCIDENCES. However, FBI stats for years have shown (yes even with the popular high capacity mags) that the winner of the fight with be decided in in under 10 rounds (this is the cumulative total of both combatants rounds fired) and the distance will usually be under 10 feet, of the opponents. Not conducive to a gun change, in the middle of a blazeing gun battle, huh?
What I DID teach officers was, that if a fight ensued after the initial 3 or 4 rounds being fired, then an effort to obtain cover should be made, as the present tactic was NOT WORKING.
This along with WEAPON RETENTION, properly conicides with you IDPA classes. I have seen many that have gleaned the attitude and tactic of the silver screen to their own IDEA of how to fight such a fight, but dismiss it as TOMBSTONE COURAGE brought on by fantasy.
I have looked at police reports where fights were ended with several rounds (3 or 4), and some that were ended with one. Although I have been out of law enforcement for 13 years now, I have NEVER seen a high capacity magazine be the cause of a win. The REAL fights just don't last that long, before a winner is declared, by either surrender, or the deciding factor of one of the combatants being hit.
But, then again we are off topic, again.