It would be a matter of opinion but I would say the Winchester Model 37.
A custom fit Purdey double shotgun
2012 remington express max
Best left to a gunsmith
Best left to a gunsmith.
The best shotgun shell for shooting ducks is a 3 to 3 1/2 inch 12 gauge with number 2 shot.
Best to ask a gunsmith for help.
Best left to a gunsmith.
Best left to a gunsmith
Best left to a gunsmith.
You will have to shoot all of them through your shotgun to see which one(s) it prefers.
My best guess is $350
410 or 20 gauge, the make of the gun depends on what you like