I also hunt south Georgia and the game processors periodically mention 300 pound bucks being brought in but that's a freak occurance and there is always speculation that they spent their lives eating a lot of corn and peanuts of which there are many places they can do exactly that around.
Those processors are dreaming. The deer I saw when I was at Ft. Benning reminded me of German Shepherds. They do have transplanted Wisconsin deer they brought down there but as mentioned, the odds....a 300 lb isn't common and it's a special buck to break that weight...IMO, less common nowdays than a B/C buck.