Answer (1 of 17): The biggest thing I’ve ever seen made after WWII is in 10 gauge. I saw a couple of Ithaca Mag-10 semi-autos back in the 80s, but I think Ithaca is no longer in existence. I also heard Remington made a few semi-autos that were essentially beefed-up Model 1100s but I don’t think a
What is the biggest gauge shotgun you can buy commercially? - Quora
What is the biggest gauge shotgun you can buy commercially? - Quora
What is the biggest gauge shotgun you can buy commercially? - Quora
What is the biggest gauge shotgun you can buy commercially? - Quora
What is the biggest gauge shotgun you can buy commercially? - Quora
What is the biggest gauge shotgun you can buy commercially? - Quora
What is the biggest gauge shotgun you can buy commercially? - Quora
