Agree with Buzz and Bobby that 26" barrels (or even a bit shorter) probably aren't a detriment if you're hunting woods birds. And 26" barreled OU's used to be quite popular with skeet shooters. Now, with Sporting Clays guys going to longer barrels, they seem to be the "in" thing.
Re barrel length and weight: I have a W&S 700 16ga with 28" barrels (and a leather-covered pad) that's dead on at 6 lbs. Recently swapped a Francotte 16ga, 26" barrels, to a good friend. It's just a shade over 5 3/4#. So they are out there. If you're looking W&S, you're much more likely, I think, to find a 20ga than a 16. And most of those--even the ones made with 3" chambers, for the American market--will be sub-6#. I had a 720 (702 made for the American market with 3" chambers) that weighed under 5 3/4. I never had the nerve to touch off a magnum in that gun!
