Well, I have about 450 rounds through my Benelli M1S90 Tactical, with 18 1/2" barrel, and it hasn't hiccuped yet, even with light dove loads. The great majority of ammo has been 2 3/4" standard buckshot (non-magnum 9 pellet OO and 12 pellet 1) and 2 3/4" Winchester 1oz slugs. Also, a bunch of Winchester and Federal Low Recoil "Tactical" (you know it sells so much better whenever they call anything "tactical" )
) buckshot.
Most of the birdshot was Rottweil #6 heavy game, but I've used about 50 rounds of Fiocchi 7.5 dove and it never hicupped.
Remington 11/87's have to have at least 24" of barrel to develop enough gas pressure to reliably cycle the action with light loads.
I haven't had extensive use of a Mossberg M9200, but they seem to be fairly decent semi autos that aren't cost prohibitive.
Honestly, if you're looking at a $500.00 or so price range, I'd get a good Remington 870 Police or Mossberg M590A1.