When I was little, my dad had a rat infestation in the basement of one of his rental properties. A buddy of his went down there and did some street sweeping with .22 birdshot and cleaned up. Got a couple magnum sized ones too. Makes me wonder if there are any Boone and Crockett measurements out there for rats? It would be something to a display of record book rats next to the deer and elk racks at the sportsman shows.