I honestly don't believe the guy shoots enough to own a shotgun. He's obviously not a regular shooter - his form is miserable and I find it hard to believe he hit anything he shot at. That pheasant the guy was showing him in the news article was probably shot by someone else.
I've known several people in my life who are wealthy on the level of sKerry's wife. Trust me they don't borrow anything, they just buy it. And they buy a lot of expensive "toys" that they don't actually use.