Winchester Ballistic Silvertip 7mm Remington Magnum 150 Grain Centerfire Rifle Ammo delivers outstanding long-range performance with sleek, aerodynamic bullets that expand rapidly with massive knock-down power. The Ballistic Silvertip bullet utilizes a polymer tip and a boattail base to minimize bullet drop and wind drift at long range; a tapered, copper jacket over the lead core controls expansion to enhance weight retention for consistent penetration. Winchester Ballistic Silvertip Rifle Ammo comes loaded in nickel-plated brass cases for corrosion resistance, and reliable feeding and extraction. Outstanding long-range performance Polymer tip and boattail base Rapid, controlled expansion Tapered, copper jacket Nickel-plated brass cases