Some of my hunting guns and a good 'ole can of Copenhagen (too bad I quit).
Marlin 30-30, Remington 870, Weatherby Vanguard .30-06, and Remington 1100.
that's an 870? It looks like an Ithaca 37 to me. That's the only pump I know that doesn't have side ejection.
I'm not 100% sure because that photo is old and I think that might have been my buddies shotgun. Can't remember right now but I'll try to track that shotgun down and let you know.