Work in the same manner as Bangers, but are fired from a 12 guage shotgun. The power of the cartridge is considerable, so they will travel 200 feet or more before exploding. Shell Crackers must be fired from a clean shotgun without a full choke, and with a chamber at least 2-3/4" long. 100 rounds. ATF explosive permit needed for this product unless you are a government entity. Additional Hazmat shipping charge on this product.