Federal Solid Core 10mm Auto 200gr SC SJFN Handgun Ammo - 20 Rounds - When wild places put you in a tight spot, keep your cool, rely on your skill and call on the unstoppable performance of Solid Core ammunition, from Federal Premium. Its flat-nose bullet is formed from extremely hard, high-antimony lead to hold together while blowing through bone and penetrating deep, making it an ideal choice for both hunting and dangerous animal defense. Unlike hard-cast bullets, Solid Core uses a Syntech polymer jacket to reduce friction and leading without features like wax rings and gas checks. Deep-Penetrating Bullet Built For Tough Game Like Bears And Hogs Extremely Hard Lead Core Syntech Jacket Eliminates Lead Fouling And Reduces Friction Without Costly Features Like Wax Rings And Gas Checks Powerful Protection Against Aggressive Bears And Other Dangerous Animals