The only instance I've seen much use with ultra short wadcutters was for a close range stage of certain target matches, where at 7yrds from the target, sighting is not allowed (pistol fired at waist level and shots were moved closer to the target centre by adjusting accordingly without viewing the sights and muzzle flip is undesirable).
In otherwords 'putt-putt loads' as that's the sound they make when fired (the wadcutter is seated way down in the case on top of a tiny powder charge).
They properbly make for a reasonable light target load at 25yds, if dosed with more powder, rifling should be spinning them fast enough(for such a short bullet).
Also I've 'heard' of them loaded as SD rounds, loaded more than one per cartridge, giving that 'double tap' effect from each round, so if you do several rapid shoots, it's like hitting your threat with 000 buckshot.