Speer began manufacturing bullets during World War II and today the company offers a range of options including Speer Deep Curl Handgun Bullets. Speer electrochemically bonds the DeepCurl jacket to the lead core to create the toughest most accurate handgun hunting bullet possible. Pre-formed petals expand reliably and consistently and the bullet?s high weight retention ensures deep penetration on heavy-bodied game. Electrochemical process bonds the jacket to the core Pre-formed petals for reliable controlled expansion High weight retention and deep penetration