CORBON's DPX (Deep Penetrating X-panding)ammunition is aPROVENhunting load in the field, it utilizes an all-copper hollow point or tipped bullet. DPX is available in rifle loads as well as handgun loads. The reliable solid copper bullet provides consistent expansion, and deep penetration. Weight retention is 100% with this load even through thick hides, heavy, dense muscle or large, heavy bones are struck.Lead Free Restrictions?:All DPX bullets are also certified lead free and can be used in California.