Why is some brass shiny and others looks burnt?

Brass work hardens. This means that as brass is drawn from a cup to what you know as a cartridge case, it becomes more brittle with each step of force that is applied. Manufacturers overcome this by annealing the brass to soften it and make it pliable for the next process.

All brass is annealed. No matter what you read on the internet or have heard at the range, we assure you all brass is annealed. However, at the end of the manufacturing process before brass is packaged for sale some manufactures clean off the oxidation marks and return the brass to the shiny appearance you are used to seeing.

No matter how your brass looks, every round loaded by Copper Creek is hand loaded in NEW brass directly from the manufacturer.