I got an old 16G 20" barrel, mismatched stock, "hacksaw choke". Yup, shell carrier on the butt. Great barn gun. Has protected livestock for the 25 years that I've had her & will into the next century.
My Gramps kept it's twin in the dairy to keep the snapping turtles from the cows. (Some of those suckers were dangerous to us kids... if we found them one of us went to get Gramps.) My grandfather's diary goes back to his purchase of the farm in 1899 & now on the third generation.