Like what I make? Want fewer sponsorship ad reads? Consider contributing to my Patreon at https://patreon.com/OurOwnDevices While out at the range filming the Rifle Grenades video, I came across a number of strange plastic cartridges lying on the ground. At first I assumed them to be flares or 410/28-gauge shotgun shells, but further research revealed them to be Firesticks, a new product from Federal Ammunition that really stretches the definition of "muzzleloader" to its breaking point.