I call bullshit on this. WHAT IS THE DISPERSION AT 10 ft? Don't believe me? it's easy enough to prove for yourself. Put up a piece of paper and shoot it from 10 feet away. See for yourself.
Chances are that this isn't a para-military assault on your home
You never know what goes through the mind of an assailant. If you want to give away the advantage go for it. You have to realize that someone in your house is not there to tell you you won the publisher's clearing house sweepstakes. I prefer for their first knowledge of me to be when my rounds hit.
Ok Dirty Harry, you play commando, my folks will play the odds.