Unlike Bill, my advice is worth what you pay for it.

Going back to my original post on this topic the most important thing in shooting any gun, especially older SxS's which vary in their dimensions unlike modern target guns which are fairly standard, it is critical to me to hard focus on the target before I mount my gun. That tends to slow it down in your minds eye. Make your move to the target in one deliberate move and know where you want to break it.

Watch any master class clays shooter and you will see a minimum of barrel movement. Bill is right. Heavy gun or light gun the techniques are the same.

Before I pay you Bill, you first need to convince me that you had a valid reason to single me out.

I think that you have to accept the fact that you will shoot targets better with a heavier gun, while a lighter gun will be easier to carry in the field. That's the trade-off.
I don't chase game birds with a 9 pound target gun, and I don't expect to win a sporting clays match with a 6 pound sub-gauge.

Upland hunting down here means quail hunting and the name of the game is a light gun that you can raise up quickly and aim at going away birds. Completely different from waterfowl hunting on the open marsh.