John,
Thanks for the info, and you are right - there is an article in the current Shooting Sportsman that talks about 2" guns: "Manufacturas Arrieta" on page 57. It mentions a gun that weighs 5 lbs 15 oz.
Not requesting an order, but just out of curiosity - could you get a 2 3/4" 12 or 16 ga gun at that weight? 2 3/4" just makes so much more sense, with ammo availability being what it is, and, as you say, you could still shoot the 2" or 2 1/2" if that's what floats your boat.
I hunt pheasants almost exclusively now with a 2.5 inch chambered, Lindner 12 bore FW. She weighs 5 pound nine.