I had found a few boxes of those when I bought a lot of reloading equipment from someone who decided they where done. I used them to load some 308 loads and I saw no difference from the 210Ms I had been using. Powder was XBR8202, 175gr SMK, and Norma brass.
I will note, I do know they were kept in a temp controlled area buy the previous man and I do not know what lot they were from or how old they were. He kept everything in theses neat little totes with slots and he had some stuff from the late 90s that literally looked like it came off the factory conveyor belt. So, if the owner ship has changed, I don't know if that helps.