Full Metal Jacket bullet. Standard lead core with a metallic jacket. Best for training and target shooting applications. S&B has been manufacturing military ammunition since we made our first percussion cap in 1825. We adhere to the tightest of tolerances for all of our tactical rifle ammunition. It's torture tested to perform in the toughest environments across the globe. Reliable functioning Non-expanding No barrel leading 147 grain FMJ FMJ .308 Winchester/7.62