Nosler's E-Tip is a lead-free bullet that doesn't compromise on accuracy, expansion, or penetration. Nosler's one-piece design of solid copper-alloy meets all lead-free hunting regulations. The polymer tip initiates expansion while delivering unsurpassed penetration and weight retention. The E2 Cavity (Energy Expansion Cavity) provides a dual-expansion chamber for amazing stopping power and uniform expansion with 95%+ weight retention for superior penetration, rivaling even the highest quality lead-core bullets. No matter what they hit, they punch right through. The Expansion Control Ring insures controlled expansion at a wide range of velocities and conditions, making the E-Tip very versatile. The boat tail configuration combines with the streamlined polymer tip for extreme long-range performance and for easier loading.