A single shot would just about eliminate the chance for a double! It would also eliminate the happy circumstance of having instant choke selection when the moment calls for it.
Don’t tell anybody, but, I got a double with a Remington model 17 pump, missing the first shot at the bird, connecting on the second, and connecting on the second bird with the third shot, a shot that was far enough away the buddy who witnessed it figured the bird was lost.
My Gordon had other thoughts.

Best,
Ted