Hey everyone...I'm fairly inexperienced with shotguns and was wondering what kind of ammo would be good (reasonable price as well) for my 12 gauge mossberg 500...It is strictly for home defense and I would like to use the same ammo at the range as well (therefore would like inexpensive to moderate priced shells). The store I bought the shotgun from sold me some Federal lead 2 3/4" shells that are supposed to used for bird hunting. I asked the store about 00 bucks, and they said for home defense I need really small pellets so they do not penetrate the walls...Help Please!