Sierra Varminter Bullets deliver the performance and consistency needed in the demanding sport of varmint hunting. These thin-jacketed, soft core bullets were designed for use in cartridges such as the 22 Hornet, 22 K-Hornet, and 218 Bee at muzzle velocities between 2600 and 2900 fps. These short bullets easily stabilize in barrels with a 1 in 16″ twist. These varmint bullets also perform very well at velocities up to 3500 fps out of medium capacity cartridges such as the 222 Remington and 223 Remington. This is not loaded ammunition.