Hornady Critical Duty Ammunition is a great option for Law Enforcement, Tactical Professionals and those looking for a reliable, effective personal protection round. This ammunition incorporates two new revolutionary Hornady Features: Flex Tip bullets that initiate consistent expansion while preventing clogging, and the InterLock band which locks the jacket and core together preventing separation and ensuring maximum weight retention. This bullet has proven terminal performance through ALL FBI test barriers every single time. The core on this revolutionary bullet is made of high-antimony lead alloy making it tough while delivering controlled expansion. Loaded in nickel plated cases to help prevent corrosion.