I’m also in GA for reference. Here’s a buck I passed in 2023 and have been watching since 2023. I’m very confident he’s 6YO as he’s still in the exact same area as the pictures & sightings.
The point I’m getting at is that some bucks grow larger than others. Some mature bucks will top out at 180# when others can and will hit +240# here in GA. Dependent on Food, Age & Genetics.
All that being said, your buck has a full brisket and even length legs front & back. Body appears to be full as well with main beams going to about the nose tip. I’d say he’s mature 4-6 range… but without history, it’s an educated guess.
Here’s a different buck on the same exact property pictured above.
Both are mature bucks, one is just physically larger and the other has much larger antlers.