3:15 – When you don’t wear your eye pro, sometimes the shotgun will check you and fix that I can’t imagine wearing earbud headphones and shooting 3.5″ magnum loads is at all adequate for db reduction.
4:05 – Cool it actually did eject it. I experienced the forend coming back like that when I had my Remington 870.. I didn’t think to do any science like he did though and shoot without holding it to see what would happen.
Knowing RN, I’m surprised he didn’t build some sort of spring contraption and force multiplier just ahead of the receiver to force the forend back ahead which would also chamber a new round. On a slamfire capabable shotgun like the 870 Law Enforcement (and marine?) versions you could get an auto haha.