Whizz Bang! Watch how these natural ingredients can make gunpowder
Cody is the real deal. He's a hardcore prepper who walks the talk on a large tract on land in the middle of nowhere. He even has his own mine.
So he has a need for gunpowder. And being a smart, self-reliant guy, he worked out a way to make it that keeps him largely independent of stores and other people.
This is real SHTF prepping. It's a combination of doggedness and smarts.