*Some discoloration may have occurred in these cases. Winchester WMA headstamped cases were purchased primed, new and unfired. They were factory sealed with a waterproofing lacquer in the case mouth and primer pocket. The discoloration is due to the annealing and added sealant, which we cannot remove from primed cases. Extensive testing has been done to ensure they are the same quality as any other case we use. A standard solvent is all that is needed to clean your firearm after use, and the cleaning process is the same for these as other unsealed cases.