HSM Ammunition .45-70 Government 300 Grain Jacketed Hollow Point Flat Nose Brass Cased Rifle Ammo 20 Rounds. Loaded with Sierra 300 Grain Hollow Point / Flat Nose. Specifications for HSM Ammunition .45-70 Government 300 Grain Jacketed Hollow Point Flat Nose Brass Cased Rifle Ammunition: Manufacturer: HSM Ammunition Caliber: .45-70 Government Number of Rounds: 20 Bullet Type: Flat Nose (FN) Jacketed Hollow Point (JHP) Bullet Weight: 300 grain Cartridge Case Material: Brass Package Contents: HSM Ammunition .45-70 Government 300 Grain Jacketed Hollow Point Flat Nose Brass Cased Rifle Ammunition HSM Ammunition HSM-45-70-15-N: .45-70 Government 300 Grain Jacketed Hollow Point Flat Nose Brass Cased Rifle Ammo 20 Rounds