If I have the shotgun I'm almost always dealing with a scenario that involves ten yards or less due to heavy cover. But that's a good point. And to be honest I really want a coach gun for hd.
But I do wonder if Americans used this system in the past. It seems to make sense. I once stalked what turned out to be a flock of turkeys in pursuit of a deer. They weren't in season (although they always should be in my neck of the woods now), and I had slugs loaded in the 870.