HSM Ammunition Varmint .22-250 Remington 50 Grain Sierra Blitzking Brass Cased Centerfire Rifle Ammo 20 Rounds. These highly-accurate rounds come in a variety of calibers for all various types of varmints. This ammunition is non-corrosive reloadable brass cased and boxer primed. Specifications for HSM Ammunition Varmint .22-250 Remington 50 Grain Sierra Blitzking Brass Cased Centerfire Rifle Ammunition: Manufacturer: HSM Ammunition Caliber: .22-250 Remington Number of Rounds: 20 Bullet Type: Polymer Tipped Boat Tail (PTBT) Bullet Weight: 50 grain Cartridge Case Material: Brass Application: Hunting Package Type: Box Included Accessories: None Primer Style: Centerfire Features of HSM Ammunition Varmint .22-250 Remington 50 Grain Sierra Blitzking Brass Cased Centerfire Rifle Ammunition: BlitzKing bullet Muzzle Velocity: 3812 fps Muzzle Energy: 1614 ft. lbs. Designed for varmint hunting Package Contents: HSM Ammunition Varmint .22-250 Remington 50 Grain Sierra Blitzking Brass Cased Centerfire Rifle Ammunition What is HSM Ammunition Varmint .22-250 Remington 50 Grain Sierra Blitzking Brass Cased Centerfire Rifle Ammunition good for? The manufacturer suggests that it is good for hunting.HSM Ammunition HSM-22-250-3-N: Varmint .22-250 Remington 50 Grain Sierra Blitzking Brass Cased Centerfire Rifle Ammo 20 Rounds