Hrndy 300blk 190gr Sub-x 20/200Hornady 300 Blackout Subsonic Ammunition is designed for accuracy and performance below the speed of sound. The new 190 gr Sub X (Subsonic eXpanding) bullet features a lead core. Long grooves in its gilding metal jacket combine with the bullets flat profile and the patented Flex Tip insert within its hollowpoint cavity to help it expand reliably at low velocities. Features : 300 Blackout 1,050 Feet per second 190 Grain Sub X 20 Rounds per box