Brian Nelson, the youngest male gun blogger, has written about a tour he took of Berry’s Manufacturing in St. George, Utah.

After the bullets are meticulously cleaned and inspected, they are put into 55 gallon barrels and poured into a vat containing a cyanide and water rinse. Also inside the vat is a device to keep the bullets tumbling. The rinse is charged with electricity, and a copper ingot is inserted. The bullets are left to tumble overnight.

I always wondered how bullets were copper washed/plated (not to be confused with copper jacketing).