Federal, Syntech Action Pistol, 9MM, 150Gr, Total Synthetic Jacket, 50 Round BoxWARNING9MM870 Feet per second150 Grain total synthetic jacket50 Rounds per boxProduct DescriptionLike all Syntech loads, Action Pistol features the exclusive Total Synthetic Jacket (TSJ), which prevents metal-on-metal contact between the bullet and barrel, eliminating copper and lead fouling as well as reducing damaging heat and friction.