The best seller among shotguns in the United States is the 12 gauge pump gun with a 30-in. full-choke barrel. It is what the customers demand and, naturally, what the manufacturers supply. Such a gun is all right for deliberate pass-shooting at ducks at from 45 to 60 yd. And when fixed up with a special straight stock and ventilated rib, it is also a fine weapon for trapshooting.