I can only speak for a few of the models you mentioned but here goes. Basically, the 500 is the standard model with a chamber for 2 3/4" or 3" shells. The 500 comes in a bunch of different models with vary stocks, finishes, gauges, and barrel lengths.
The 835 is the top-of-the-line pump gun. The 835 is chambered for 2 3/4", 3", and 3 1/2" 12ga shells. The 835 barrel is overbored (or as some people call it, backbored) to 10ga dimensions at the chamber and has a gradual taper to a bit larger than average muzzle diameter. The receiver is also drilled and tapped for scope mounts. The newer 835's are also ported. They come in a variety of barrel lengths, stocks, finishes, and sight systems.
The barrels, actions, and receivers are not interchangable between the 500 and 835. As for other parts of the guns I'm not sure but I'm guessing they're not.
I've owned quite a few model 500's and they seem to be a good gun for rabbit, squirrel, birds, and deer if the slug barrel is added.
IMO, the 835 is the king of turkey guns, bar none. I currently own 2 of the 835's and love them.
As for the 9200 I'm not sure about it. I haven't seen any on my dealer's rack lately, but then again I haven't really been looking at the shotguns. From what I can tell, the 9200 was never the success that Mossberg wanted it to be. Personally, I'd take a Remington 1100, 11-87, or a Benelli autoloader over the 9200 anyway. Of course there's a big price difference too.
The 835 is the top-of-the-line pump gun. The 835 is chambered for 2 3/4", 3", and 3 1/2" 12ga shells. The 835 barrel is overbored (or as some people call it, backbored) to 10ga dimensions at the chamber and has a gradual taper to a bit larger than average muzzle diameter. The receiver is also drilled and tapped for scope mounts. The newer 835's are also ported. They come in a variety of barrel lengths, stocks, finishes, and sight systems.
The barrels, actions, and receivers are not interchangable between the 500 and 835. As for other parts of the guns I'm not sure but I'm guessing they're not.
I've owned quite a few model 500's and they seem to be a good gun for rabbit, squirrel, birds, and deer if the slug barrel is added.
IMO, the 835 is the king of turkey guns, bar none. I currently own 2 of the 835's and love them.
As for the 9200 I'm not sure about it. I haven't seen any on my dealer's rack lately, but then again I haven't really been looking at the shotguns. From what I can tell, the 9200 was never the success that Mossberg wanted it to be. Personally, I'd take a Remington 1100, 11-87, or a Benelli autoloader over the 9200 anyway. Of course there's a big price difference too.