I have actually saw a room like the one tuj posted a pic of in post #8.
It was unbelievable. Fallout mike and I put a security alarm in a guys house like that. He had us beef up the security in the gun room so we got to spend quiet a bit of time in there. It was wall to wall and all good stuff. The built in gun racks were higher up and the pistols were in drawers underneath instead of on the walls.
The thing is, we went to his business and there's a room off of his office with a couple hundred long guns as well. While at his house he claimed that he kept a hundred or so more at his sister's house because he didn't want them all at the same place. After seeing what we saw, I have no reason to doubt that.
It was something else.