ok find a place where there are the most mole holes/ tunnels in the ground.take the highest caliber ammo (or whatever has the most powder)you can find.take the bullet out with pliers.then use the pliers to completely close the shells opening where the bullet was. then hit it with a hammer.make sure you where the ear muffs that you use for shooting(dont know what there called),as this will be loud.a .22 will sound like a 30/06.

my friend has one eccept they have shot in the shells.they rigged it for a coyote before.[8D]