a 20 is plenty! i dnt deer hunt w/ a shot gun but i have all ikinds of 12s and a 1 and a couple 2s and i always take my 1187 20 for everything, geese, ducks, woodcock pheasant. ijust match the choke and shot tot he game and conditions. w/ the tech. they have now a 20ga slug will know the eyeteeth outa a buck no problems. i agree w/ andy about the condor, i dont like any o/u that doesnt have ejectors. i doubt you would have a hard job selling yer barrel. theres always someone who is interested no matter what it is. put it on craigs list. i bet it would sell