I own a Remington Model 11 shotgun that only holds three rounds.
Or rather, I DID own one, prior to losing all of my guns in that tragic boating accident on the Chesapeake Bay back in November of 2008.
Sorry, about the accident!
I appreciate you providing an example of a shotgun that actually holds three rounds but I think it is stretching possibility that he had the same gun.
Especially since he was expecting a dance. I know if I was expecting trouble I would have a little more firepower than that.
BTW, when I used to take my guns fishing a I tied a crap ton of bobbers on them just in case. Sadly it was the volcano visit that defeated the bobbers.