RE: Bolt action shotgun
A friend of mine told me of an old Mauser actioned shotgun that his dad had back in North Dakota. Evidently a number of these were made post WWI with surplus Mauser 98 actions.
Don't know how valuable they are or how well they work, but they must not have been a total failure. Mossberg made bolt action shotguns a while back. My cousins and I used to hunt squirrels with one on their property in Minnesota back in the 1970s. Not as convenient as a pump but it never malfunctioned on us either.