Ok- I'll take a shot. Why indeed does a 16 gauge command a premium over the same gun and grade over a 12? Here in MI- a visit to Cabelas will show a 35% premium in hunting loads of the "bastard gauge" over the std. 12- and as for steel waterfowl loads- forget about that-- hard if not impossible to find 16's.
Take a visit to a SD hunting lodge in late OCT-- pheasant and duck hunting galore- and survey the gauges used by the hunters-- or a visit to Stuttgart in late Nov. how many serious hunters are shooting 16 gauge waterfowl guns. Now up in NE, where grouse and woodcock might be the targets de jour- perhaps more 20's, 16's and 28 gauges are used, that might be different. RWTF