Asked in ChemistryBrown BearsElements and CompoundsPlural Nouns
What is corrosive ammunition?
November 26, 2011 6:42PM
Corrosive ammunition is simply any ammunition (usually older military) that uses primers containing potassium chlorate. The residual salts from primer combustion contain potassium chloride, which is highly hygroscopic - water in atmosphere combines with the salt to form a corrosive liquid, which will pit, corrode or rust the rifle bore.
Corrosive salts are water soluble and today, cleanup only requires a few patches soaked with soapy water or even Windex, followed by your favorite bore cleaner.
Consider any WW I or WW II surplus ammunition to be corrosively primed, and clean accordingly.