re: A400 not dropping shells from magazine - what's wrong?

Does it have a magazine control lever on left side? My browning gold has a lever that will "lock" the rounds in the magazine, that allows you to switch the round in the chamber with a separate shell by hand. For instance if duck hunting and a hog runs up, you can toggle the lever, eject the shell, and load a slug / buckshot etc without disturbing the duck loads in the tube.