Corrosive powder has a lot of FLASH, SMOKE, and a loud REPORT. We make our own special recipe of corrosive powder. It will rust the metal of a firearm if left, so the firearm should be cleaned after every use.
Non-corrosive powder (or NC) is any powder we use that’s not our corrosive powder. It could be our own special mixed flash powder or a standard smokeless powder. Firearms should be cleaned regularly after using these powders.