I have a Winchester 1300 in MO new break-up and 21" barrel. Like Appalachian said, its essentially a single shot that holds extra shells. Never had to pump it in need.
Which led me to a single shot factory dipped in original bottomland, which is what I carry most anymore. Light weight, easy to point, easy to prop on the knee, and doesn't mind getting dragging around the dirt and mud. Easy to clean too.
Best part is both these guns shoot same choke and load, which keeps things simple.