I do decoy only hunts, i like to get them in nice and close and a 20 gauge certainly isn't a long range range shotgun anyway. I have found the 20 gauge useful inside 30 yards maximum , if i go to a spot where getting the birds to commit fully is harder and i think decoying larger flocks is possible I use 3.5" 12 gauge BBB shot and patternmaster choke tube when 40-50 yard multiple shots are possible. Todays spot was like that and my custom 870 supermag was brought into service and without it the 1 duck I managed all morning would not have happened . My 20 gauge handi is 26" barrel and full choke, I think i am going to take a saw to it and shorten it to 19" that way it will be cylinder choke, still usefull for my close range duck hunts maybe even more usefull than it is now as full choke as 10 yards and in becomes challanging and it will allow me to go up in shot size as the ducks and geese we have here are normally heavy feathered birds towards the last month of the season and i normally don't like using less than BB shot size.
You guys down in Deleware area isn't the chesapeake bay a good waterfowl area?i went to ccollege in philly area and would go down to NJ fishing alot.