The look on his face when he heared me pump the gun made my day,
Not to be a dick, but you are lucky we wasn't armed. You hear someone in your home and decide to confront them, rack it quietly first. A prepared adversary will not give you a chance when you "walk up" on them.
If someone ever breaks into my house, here in tennesse its the the stand your ground law, I hope they enjoy 5-10 rounds of .223 hps, btw, I can empty a 30 mag clip in less then 15 seconds into a 3-5 inch group , and we can shoot em as soon as they get in the house, and I shoot first and call the cops later.