I played paint ball a little bit, and I know that a good barrel, the paintball is rather tight in their, so much that they wont roll out. If a paint ball freezes, and expands how the hell does it even shoot out? I allways thought that was a myth.
google searching frozen paint balls now. :rofl
EDIT… I guess you can. And you can be aressted becasue they are solid projectiles, and at that point are considered a weapon and assult. there was an article in NJ where kids got arrested for it.