That is correct about the filming on public land in Missouri. I actually remember seeing that on dream season where the olsen couple were the only ones that knew that and took the time to look into those laws.
Since then I have been looking into that law in every state that I plan on hunting/filming.
The good thing though is that there really is not that many places that don't allow it.
I do know that you won't find it in to many hunting regulations. Thats one of those laws that actually require a person to call the DNR or state law enforcement to look into.
I still have a couple more months over here after my leave in September. I will look into the filming laws of the Midwestern states and post what I find out for everyone thats interested.
NRA Certified Instructor: Pistol, Personal Protection in the Home. (MN Carry Permit)