Federal TSX 300 Winchester Magnum 165gr Rifle Ammo - 20 Rounds - Federal has brought back the immensely popular Barnes Triple-Shock X. This proven all-copper hollow point groups tightly at long range and delivers consistent, large-diameter expansion. The monolithic design retains nearly 100 percent of its weight on impact to penetrate deep, and its grooved shank minimizes barrel fouling and improves accuracy. One-piece copper construction; Deep hollow-point tip; Grooved bullet shank improves accuracy; Almost 100 percent weight retention; Deep penetration and large, consistent expansion;