I agree a 20 gauge will do just fine. I like #4 SquirrelShot and #3 Buckshot for Deer hunting.:thumb:The 20 gauge is perfect when paired with #4 shot and a full choke. Not a problem aim for the tip of their nose. The number of shot that hit should be at a minimum.
It's nice that you resurrected an six (6) year old thread but why?If you're going to buy a shotgun, I would suggest a .12 gauge. It can be used from home defense to hunting just about any animal. The range of the .12 gauge is alot farther than a .410 shotgun too. I prefer the .22 for squirrel hunting though.