I shoot a 20" barreled 835, and with the 3-2-7 Hevi-13, I get close to 200 hits in a 10" circle at 40 yards.
That's all I need. When I was carrying a 535, and had an issue with a broken forearm slide. I had to borrow my father-in-laws 28" barreled 500. Patterns fantastic, but I see no need to be carrying a loaded flagpole through the woods. I much prefer the shorter barreled shotguns.