Sierra Varminter Bullets deliver the performance and consistency needed in the demanding sport of varmint hunting. Lightly constructed to provide explosive expansion while minimizing ricochets. These lightweight bullets easily handle being pushed at very high velocities to obtain flatter trajectories. Trust Sierra Varminter bullets to perform like you expect on your next varmint hunting trip. The 22 Caliber 60 Grain Varminter bullet performs best out of larger capacity cartridges such as the 22-250 Remington or 220 Swift fired in barrels with a 1 in 14" twist. However, these also work well in medium capacity cartridges such as the 223 Remington fired out of barrels with a 1 in 12" twist. This is not loaded ammunition.