I rarely shoot trap, but it reminded me of a time when, Wednesday evenings, I'd hike across the Umpqa River on the railroad trestle out of Winchester and shoot with the local club there. I was always just in it for fun, using the first shotgun I ever owned, and the only one I had, an old, brown, single shot Iver Johnson w/hammer. Outshot a lot of guys with Brownings, Berettas, Perazzis, Remingtons and Winchesters with that old $25 gun. Rode around in the bottom of a canoe for years, and I killed my first goose with it, too, lots of ducks, trained a couple of good dogs under it, and it just loved to shoot quail. It's a wall hanger now, after one of my renowned attempts at gunsmithing. Still shoots, but you have to hang onto the hammer until you're ready to fire, then just let it go. So it stays on the wall until I can find that darn screw...
Last time I shot trap I used a Remington 1100 3" full choke. I was pleasantly surprised with the results.