Although there are different types of media and brands on the market Frankford Arsenal Brass Cleaning Corn Cob Media is the ideal choice for reloading purposes. Whether buying in 4.5- 7- or 15-pound containers corn cob is an excellent media. With this grit dirt and powder residue found in brass cases are eliminated quickly and efficiently.Use this cleaning media prior to reloading to help keep your dies in perfect working condition. This particular media can be used multiple times but to ensure optimal performance it needs to be replaced on occasion.