What's this movie called?

Question

It is a post-apocolyptic movie, with three astronauts who come back to earth (maybe in the future) and there has been nuclear war. People are all savages. It's a B-movie. Not Planet of the Apes.

Answer 1

Def-Con 4

http://www.rottentomatoes.com/m/defcon_4/

I'll never get those 88 minutes back. Why, God? Why did I have to watch that MOVIE!!!!!!!!!!?????????????

Hope I helped.

Answer 2

There was a Movie called Ravagers shot in Birminghma, AL in the late 70's that sounds similar.