It depends on what you want to do. If you want to hunt, like duck, I would recommend a semi-auto shotgun chamberling at least 3 shells. If you want to shoot fast and accurately, like quail hunting or skeet shooting, I would recommend a single trigger "over and under" shotgun.(I think this is the best shotgun) But I would not recommend a double-barrel shotgun because of the barrel positions for any of these topics. If you just want to collect shotguns just get engraved and in good condition shotguns. (That's what I would recommend)
It will depend on what you are hunting and which brand of shell your shotgun patterns best.
Shotgun
Dick
yes, the trench gun and the double-barrelled shotgun(best one!!)
Shotgun
2
Mossberg
The best shotgun shell for shooting ducks is a 3 to 3 1/2 inch 12 gauge with number 2 shot.
Buy the best you can afford
Modified.
Best left to a gunsmith.
a gun rack