agreed. no reason to give them the opportunity to make the wrong choice :-)
Never call a business. Just as likely to get them considering whether they want guns or not, whereas before most businesses haven't even considered the issue.
can't speak for other cities, but I have yet to see a valid 30.06 sign in any Austin restaurant.
where it starts to get fuzzy is a hotel that contains a restaurant with a bar and a separate lounge (read: bar). Its possible the lounge is posted 51% (red sign), but no where else.