Thought I would chime in. I'm on my 4th loading using the original 375Ruger headstamp 7LRM brass and it's holding up well. I did load some up to 73.6grs of H1000 to get to 3240fps. Very accurate, but extractor marks and occasional stiff bolt lift. Those brass had loose primer pockets at the second loading...too hot! The rifle shoots amazing.
