Re: Remington Brand Case Life
I shot a 7rum tired on a hundred casings and re-necked them to 30 cal. Most are still going. If you are loosing pockets you need to tame your load down a bit. Modern magnum casings don't show any distress ( ejector marks, etc.) until you get up to the 75 Kpsi range, but you'll stress your pockets by then. Continued use of heavy loads wears everything more than sensible loading. Often a powder switch is enough to get the same speed at lower pressure.
Btw, I've got some nosler rum brass and it runs neck and neck with the rem stuff. Nosler may actually be a bit softer.