The 20 gauge pump action shotgun at Walmart for $147 is actually the Stevens 320. This is a fantastic gun. I've copied the last review I read on it and will paste it.... "The Savage Stevens 320 pump action shotgun is based upon a proven rotary bolt design with dual action bars for a smooth action. These economical shotguns are rugged, simple to operate, and dependable. This field grade shotgun has a 26" carbon steel vent rib barrel and synthetic stock. The barrel is threaded for Win choke and comes with interchangeable choke tubes.".
I've used these shotguns. They're great. The Walmart near me also sells Mossberg 500. They're still sloppy and a rattle trap, But that's what you're buying. The pardner is a fantastic 12 gauge for $148. The 20 gauge pump is lightweight and fits larger framed people and younger shooters. The number one rule when buying any firearm is take it home and clean it completely and reassemble oiled ready to use. I will update this post this weekend after I fired both the partner 12 gauge and the $147 stevens 320 20 gauge. I'm picking one up tom and buying the 20 gauge while I'm there.