Yeah, for what its worth, I always thought the whole 21 to buy a handgun thing was stupid. I'm pretty sure you're ok to posess, just not to purchase. I frequently carried a revolver when hunting as a young man and was never given any grief over it. Thats been almost 20 years ago so something might have changed. Heres a link: http://www.nraila.org/statelawpdfs/COSL.pdf

It doesn't specifically mention 18-20, but mentions juveniles are allowed to be in posession of a handgun while hunting, target shooting, or doing a safety course.

Wish I had better info.