Herb Parsons got good results using the slam fire feature on his Model 12 when shooting multiple hand thrown clays,in fact that feature plus the added ammo capacity of the Model 12, along with his skill,made him the top exhibition shooter of his day.
I don't shoot my 1942 Ithaca 37 like that very often because I can hit what I'm aiming at better by using the trigger for each shot when the targets are flying clays or birds.Using light loads on stationary targets you can sure put a lot of little holes in a target quickly using the slamfire feature though.