HSM centerfire rifle ammunition is expertly engineered for large game hunting and big-bore target shooting applications. Loaded with 300 gr Jacketed Hollow Point projectiles, these rounds deliver a powerful muzzle energy of 3678 ft lbs. This ammunition is designed to provide rapid expansion, reliable mechanical cycling, and excellent pressure retention under field conditions, making it effective for target practice or pursuing deer, elk, and bear. Caliber 45-70 Gov, 20 rounds per box. Safety Note Always prioritize safe firearm handling protocols and strictly observe your local and state hunting regulations regarding big-bore ammunition.