Federal Power-Shok Copper 300 WSM (Winchester Short Mag) 180gr Rifle Ammo - 20 Rounds - Practical hunters trust Federal Power-Shok rifle ammunition to deliver performance that fills the freezer at an attractive price. Power-Shok Copper provides that same consistency and value in a non-lead bullet. The loads feature an accurate, hollow-point, copper-alloy projectile that creates large wound channels. Copper-alloy construction Hollow-point design expands consistently Accurate, reliable performance Large wound channels and efficient energy transfer to the target Lead-free bullet Federal brass and primers