Two years ago the fiancee went on her first pheasant hunt carrying a pump 20 guage. I'd bought some Fiochhi 3" loads for her. She wasn't cleanly killing anything. That night in town I picked up some high speed 2 3/4" loads for her. The next day she was killing stuff. As a young teenager I killed a lot of pheasants with dads cheap sxs 20 guage, and fed it a little bit of everthing, mostly handloaded 2 3/4".
Like Bay Dog said, a 20 isn't a 12, and you won't ever have the range.
