That link is almost too easy to cut apart, so I'll just point out the obvious hole in that argument:

It focuses only on murder by handguns. Certainly, that limits the whole argument to fit the bias agenda at hand.

Maybe if you had some stats on crimes like assault, robbery, etc. and how handguns are involved, then you might garnish some credibility.

Pound for pound, guns do not belong in the home. I don't have to smear my manly pride around and say things like "Well, I need to protect my family!". Really, if you cared at all, you'd play the odds in your favor and you would not have guns in the house.

But then again, you probably hit on 18 at the blackjack tables too.