"Well that's interesting to know about illinois but I wasn't especially talking about that state alone but travel in general to all states. "
Fact is, there is nothing "in general" pertaining to all states. Each is different. You specifically mentioned IL and used a specific example. I gave a specific answer to that reference. In IL a BP pistol is still considered a firearm. How it's treated in the other 49 states is up to each and every other state. They're all different.