SB 291 is also a good pro-gun bill and it also passed. Apparently NRA preferred it to SB 308, and perhaps they thought that only one of the two bills could pass in this last 2010 session of the GA Assembly so they lobbied against the better SB 308. That doesn't make much sense since SB 291 is almost certain to be vetoed because it allows carrying in churches, which Governor Purdue strongly opposes.
Or more likely, my guessing game is way off base and NRA has simply lost it's bearings and is no longer the champion for 2nd Amendment rights that it once was. Pity.