Hornady Sub-X subsonic expanding bullets deliver reliable performance below the speed of sound. Featuring a patented Flex Tip insert and long grooves for consistent expansion at low velocities, with cannelures for positive case crimp in semiautomatic firearms.
The Sub-X represents a thoughtful engineering solution for shooters who demand performance without excessive noise. These 190-grain .308 caliber bullets are purpose-built to function reliably at subsonic velocities—below the speed of sound—where conventional expanding bullets often fail to perform.
These bullets are engineered for shooters who understand that subsonic ammunition demands different design principles than standard loads. The combination of the Flex Tip insert and jacket grooves allows the bullet to expand reliably at velocities where traditional hollow points simply won't open. This makes Sub-X an excellent choice for suppressed rifles, where subsonic ammunition is often preferred for optimal sound reduction.