In GA you can carry even with a GWL on Federal land which usually includes fishing rivers/streams. I looked it up once and came to the conclusion that it was a big fat NO! Freedom in America is just an illusion. It was true a loooong time ago but not anymore (Let's say 150 years ago).
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Clearly you have no idea of how many different types of "Federal land" there are - I can assure you with reasonable certainty that the rules for carrying on Ft. Stewart or the local post office are considerably different from carrying on a national forest.