The federal premium loads start with the finest primers, which are subjected to more frequent inspections for dimensional tolerances and charge weight to ensure they deliver consistent ignition for every shot.Next are the propellants, which are specially formulated to meet federal's stringent specifications.These clean-burning powders are of the highest grades in the industry.They're consistent and reliable.If you hunt varmints with a rimfire rifle, extract maximum range and power from the platform with federal premium v-shok loads.They provide superior accuracy, the utmost dependability, and explosive performance on impact.Caliber: 17 HMRBullet Type: Speer TNT Jacketed Hollow PointBullet Weight: 17 grMuzzle Energy: 242 ft lbsMuzzle Velocity: 2530 fpsCasing Material: BrassSub Brand: V-ShokRounds Per Box: 50Boxes Per Case: 60Hazair: Yes