Muzzle-Loaders.com Felt Cleaning Pellets are designed to clean and season your muzzleloader or to apply Natural Lube 1000 Plus Bore Butter as a seasoning agent. The 50-pack of muzzleloader felt cleaning pellets are designed to fit .50 caliber barrels. The felt cleaning pellets are soft, yet durable and will work with our 8-32 or 10-32 threaded brass jag. The Muzzle-Loaders Felt Cleaning Pellets are the tool of choice for cleaning and seasoning your .50 caliber muzzleloader barrel. Your muzzleloading cleaning chores just got easier.