In Fieldsports Magazine a few months ago there was an article about a guy who wanted to set up a 28 bore for high pheasants.
Ended up buying a Perazzi and sent it over to the US to have the barrels regulated.
On the first outing he gave it to Simon Ward a English shooting instructor. I believe Simon ended up killing like 28 pheasants with a little over 30 shells.
Dave Carrie if you watch all his videos puts lots of time and effort in to practicing and explaining high bird shooting.
It has become somewhat of a fashion over there.
I would not criticize as obviously they put a lot of time in in practice and the best shell selection for the job at hand.