Originally Posted by nctta
I realize there's not much ballistic separation between the two but I'm planning a long range build and from what I've seen barrel life and brass quality seem to favor the 7RSAUM.
What are you really looking for? Is your WSM shot out? I don't think see much improvement to be made. Is this a Christmas present to your gunsmith?
Barrel life is most influenced by pressure and powder charge. You're getting longer barrel life with the smaller powder charge. You're also getting less velocity.
What better quality brass are you getting for the RSAUM? All of my WSM brass says Norma on the head. Even my 7mmWSM's.