Well, I think we've discussed this before, but the long and short of it is you won't be getting a refund on shipping. It's the price you pay for doing business long distance. Morally, he does owe you a refund, and maybe you could sue him for a refund and win it, but it's not worth the outlay.
But, look at it this way - assuming the facts you have stated are true, he's exposed himself to you as a liar and worse even a person with lousy gun knowledge. So you are out a hundred bucks - he's out his dignity. I'd rather be in your shoes than his.
I think there's probably something to this whole Karma thing - maybe someday he'll be rolled into the OR in desperate need of kidney transplant. The delivery driver bringing the kidney will be so caught up in an angry phone call with the dealer's secretary trying to get a refund for a lied-about gun that he'll
accidentally leave the kidney on the dash of his minivan.....
