i've owned 3 new mossbergs, and my expierience with them has been bad. 2 had broken safeties within a year, and that nasty rattley -loose forearm drives me insane. my 3-1/2 jammed like no other gun i've owned.
i switched to a rem 1100 for turkeys with no issues, good gun.
for ducks i prefer to use my red label, (no Jams!)

It shoots great with the carlson tubes i installed (mod and imp mod)
good luck!
moose