Speer began manufacturing bullets during World War II, and today the company offers a range of options, including Speer Deep Curl Handgun Bullets. Speer(R) electrochemically bonds the DeepCurl(R) 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