Well, in Nunn v. State, 1 Ga. 243 (1846) the Supreme Court of Georgia upheld a law banning carrying a concealed gun (while overturning a ban on open carry). So you might have your facts a bit garbled.
Nope, just looking at the law from another angle. The law forbid the sale of small cheap guns and only allowed what was commonly called horse pistols. Something a law officer or military man might carry on his horse, not something you would ordinarily walk around doing your daily routine with. Guess who could afford the small pistols but not the big ones. Think of it as their version of the Saturday Night Special Law.
Good intentions will always be pleaded for any assumption of power. The Constitution was made to guard the people against the dangers of good intentions. There are men in all ages who mean to govern will, but they mean to govern. They promise to be good masters, but they mean to be masters.