HSM Ammunition Varmint .220 Swift 50 Grain BlitzKing Brass Cased Rifle Ammunition 20 Rounds. From the popular .223 Rem. to a full lineup of 25 varmint calibers and 66 specialized loads HSM offers the perfect round for every hunter and every scenario. For those who favor the .223 Rem. HSMs Varmint Blue stands out with its signature blue tip and lightning-fast expansion. No matter the caliber every HSM Varmint load is crafted for accuracy consistency and devastating terminal performance. Take your varmint hunting to the next level with HSM Specifications for HSM Ammunition Varmint .220 Swift 50 Grain BlitzKing Brass Cased Rifle Ammunition: Manufacturer: HSM Ammunition Caliber: .22 Hornet .220 Swift Number of Rounds: 20 Bullet Type: BlitzKing V-MAX Bullet Weight: 50 grain Cartridge Case Material: Brass Package Contents: HSM Ammunition Varmint .220 Swift 50 Grain BlitzKing Brass Cased Rifle Ammunition HSM Ammunition HSM-220Sw-2-N: Varmint .220 Swift 50 Grain BlitzKing Brass Cased Rifle Ammunition 20 Rounds