I did not have the corrosion on the brass as DF pictured Mine had a blue green ooze around the neck and/or primers, .Lost several hundred rounds.
I have several hundred .223 handloads in various other cases and various powders, loaded years ago with no issues. So, in my experience it is powder specific. See above post with links by Gringo.
While talking, with the Lapua rep on the phone couple years ago about this, he mentioned they were currently experimenting with different coating to address temperature sensitivity. I have never had a temp sensitivity issue with any of the four Vit powders i use, but I live in the South.
