HSM centerfire rifle ammunition is designed specifically for high-velocity varmint hunting applications. Loaded with 32 gr Sierra BlitzKing projectiles, these rounds achieve an impressive muzzle velocity of 4045 ft/s and a muzzle energy of 1163 ft lbs. Featuring premium brass casing material, this ammunition is engineered to deliver explosive terminal performance, extreme accuracy, and reliable cycling. Caliber 204 Ruger, 20 rounds per box. Safety Note Always prioritize safe firearm handling protocols and strictly observe your local and state varmint hunting regulations.