Ammo Inc® stelTH™ .300 BLK 220gr Subsonic TMC ammo was specifically designed for use with suppressors and helps you get everything and then some out of your .300 BLK rifle build. Hyperclean™ technology provides complete powder burn to ensure nothing goes to waste and is designed to burn clean so you can shoot longer with fewer cleanings. Purpose-built for silence, stelTH ammo is loaded into premium brass casings and helps slow baffle erosion and reduces build-up in your suppressor. 20 Rounds. Made in USA.