This is a nice shotgun. It has some dings and scratches from being used like it should be. It's a 20 gauge so it doesn't have the recoil of a 12 ga. The barrel choke is not stated on the gun anywhere.
As far as I know all Stevens 311 shotguns have extractors, not ejectors. The gun has not been test-fired. It locks up tight. The gun looks to be in excellent conditions. I would say it has average wear for a gun that has been hunted with a few times but not abused. The bluing is near perfect. The stock has some scuffs but no deep gouges.