Crap... I just took the family to see his new flick this weekend.
Don't feel too bad. Stallone wasn't the only anti in that movie. In fact, a lot of the actors appearing with Norris, Selleck, etc. are also anti-gunners. Chances are that you can't see one without seeing the other. If you boycott movies starring anti-gun people, then you boycott movies in which pro-gun people are also making a living. If you see a movie to support progun folks, know that you are supporting anti-gun folks as well.