
Ammo brass in various conditions
Hi all, just a quick one: bought two factory boxes of 44 mag from Federal. I usually get Hornady XTP, which stock would rotate heavily from my LGS. They always look the same, consistent quality amongst the cartridges.
I'm wanting to know how the brass has discoloured like this, differently amongst cartridges in the same box, and what causes it? It's strange to see these factory boxes with one discoloured case next to a pristine one. The ammo is fine, I'm not fussed and I once I tumble the cases and reload them they'll all look the same - I understand that environment and humidity changes brass, etc, but why doesn't it happen consistently amongst the cartridges in the same box (produced, I assume, at the sane time at the Federal factory)?