PMC 762X X-Tac 7.62X51mm Nato 147 Gr Full Metal Jacket Boat-Tail (FMJBT) 20 Bx/ 25 Cs X-TAC Is The Choice For The Professional And Enthusiast Alike. Caliber: 7.62X51mm Nato Bullet Type: Full Metal Jacket Boat-Tail (FMJBT) Bullet Weight: 147 Gr Muzzle Energy: 2611 ft Lbs Muzzle Velocity: 2800 Fps Rounds Per Box: 20 Boxes Per Case: 25 Application: Plinking Casing Material: Brass