The lightest rounded (dome) pellets from JSB. The abbreviation RS stands for "Rapid Speed," referring to the higher velocity provided by RS pellets. They are also characterized by a flatter trajectory. The abbreviation also relates to the automotive industry, where sports car models receive the RS (Rally Sport) designation because they are lighter and more powerful than standard versions.
If the air rifle power is 16 J, the muzzle velocity is 255 m/s.