This is a 20 round box. Hornady Subsonic XTP 40 S&W 180gr JHP Handgun Ammo - 20 Rounds - Hornady Subsonic Ammunition - designed for accuracy and performance below the speed of sound - now comes in both rifle and handgun loads. Subsonic Handgun utilizes tried-and-true XTP bullets that expand reliably at subsonic velocities. The Sub-X bullet used in Subsonic Rifle features a lead core. Long grooves in its gilding metal jacket combine with the bullet’s flat profile and the patented Flex Tip insert within its hollowpoint cavity to help it expand reliably at low velocities. Powders are selected for optimal performance and consistency from lot to lot.  Subsonic Handgun Ammo  Has a World-Class Reputation For Accuracy And Stopping Power Low Flash Signature Offers The Performance And Accuracy Shooters Have Come To Expect From Hornady Be sure to read our shipping policy.