I have to say, if you're a prepper and don't have a PCP airgun in your arsenal, you're missing out. These things can pack a big wallop, and may be important for conserving regular ammo when it's in short supply. I'm guessing you can cast your own bullets too if necessary. With this kind of power, you could certainly do some hunting, maybe even get off a self-defense shot or two.
Anyway, this is kind of fun to watch:
Anyway, this is kind of fun to watch: