Hey guys, I had a quick question about my fired cases I've saved. I shoot a 7mm ultra mag and have about 100 cases saved from Remington factory ammo. I just got a book to learn from, it talks about blackened necks due to insufficient pressure or too much chamber space. I looked for cracks but can't see any. I couldn't really catch what it was saying but it said they would only be good for a few more loadings. The whole neck is pretty black, is that not normal after shooting? Could someone please clarify this for me?