I recently toured the PolyCase Ammunition factory outside of the beautiful city of Savannah, Georgia, to see how they make bullets. To appreciate the level of innovation, it helps first to understand how traditional bullets are made. To grossly oversimplify, common copper-jacketed bullets are made by pounding a piece of copper into a tubular shape. Next, lead is smashed into the interior of the copper tube. More pounding and crushing shapes the whole thing into a final product. This is a very oversimplified explanation of what is a time-tested technique, and it works just fine for producing simple cylindrical-shaped bullets.