the only problems I have had with the federal shell is that it's not sealed up quite as good as the winchester group but that only comes into play when you are duckhunting, also they seem to have thicker brass around the rim of the shell wich is good for your double but not so good for your semi auto as far as a funtional reliability, now thats been my experiance, but there are thousands more on this here thang we call the www.