First, they are on a trap shooting range, with what looks like very loose safety precautions. The shotguns appear to be similar to those used for skeet. My guess is they were just wasting lead
“..with what looks like very loose safety precautions.”
I’m guessing it isn’t much of a photo-op when everyone is taking their turn shooting, and spaced 10 feet apart. I could even be okay with that if Graham was focused on where his muzzle was and paying attention to things rather than jabbering away the entire time.