After firing the cartridge is free from toxic exposure to barium, lead, mercury, antimony. It does not pollute the environment, does not endanger the shooter's health with combustion products, and does not leave harmful residue in the gun. It ensures safe shooting in closed premises and on target ranges. Unique patented primer design. All Seller & Bellot ammunition and is backed by strict quality control systems. When you need superior performance reach for Sellier & Bellot.