Short answer is yes. You can sight in your rifle on National Forest land. That said, there are several WMA's that have manned ranges that would better serve that purpose. I know Clybel has a top notch range.
Also there’s a shooting range just off 180, maybe a mil past jacks gap, maybe old owl town rd(entrance to brass town bald) on left as you head towards 75/hiawasee).Thanks. I just moved to North Georgia near Blairsville from MS and trying to get some insight into hunting up here.