Funny, I've hunted South/Southeast Georgia several times. Always carried my Weatherby 12g O/U with light #8 loads and no one ever raised an eyebrow. Wonder if the perception has changed in the last few years, it's been awhile since I've had the opportunity to hunt...
Well, most of the "old line plantations" are in SW Georgia near Albany and Thomasville. Its generally the more "traditional" (and usually wild bird) places that have the rules. Many of the preserves that are open the public don't care what you shoot. Though, many do prefer or demand the use of double guns. The restrictions on large bore guns is becoming less and less common. And it should because, if loaded correctly, a 12ga can be just as light or lighter than a 20ga.
Here is short video of what Southwind has to offer. They have a beautifully furnished lodge, great food, and gorgeous pinewoods loaded with explosive coveys of bobwhite quail.
http://www.youtube.com/watch?v=LvCzGRAnLfoAdam
