HSM Varmint 223 Rem 55 Grain Features For avid varmint hunters east to west north to south who favor the popular .223 Rem. round HSM offers Varmint Blue.Loaded in the .223 Remington cartridge and using temperature stable powders HSM is able to thrust the 55-grain bullet at 3120 FPS. HSM guarantees that the Varmint Blue ammunition will always be ready when the moment is right. Varmint hunt with HSM! HSM Varmint 223 Rem 55 Grain Specifications: Brand: HSM Category: Centerfire Rifle Rounds Caliber: 223 Rem Model: Varmint Bullet Weight: 55 gr Rounds Per Box: 20 Casing Material: Brass Application: Small Game Varmint Boxes Per Case: 25 Bullet Type: Sierra BlitzKing Muzzle Energy: 1189 ft lbs Muzzle Velocity: 3120 fps