The RWS R 100 is the preferred cartridge of internationally successful sport shooters. High velocities in the supersonic range and excellent precision make the RWS R 100 the first choice for silhouette shooting with rifles and pistols. Suitable at 50 and 100 m. Please inquire about the valid regulations of the IBU, when you want to use RWS .22 l.r. R 100 rimfire cartridges in biathlon. The bullet weight is exactly 2.675 +/- 0.005 grams.