One similarity I've noticed with Nosler and Norma brass is tight primer pockets that need to have a pocket uniforming tool run in them for good primer seating. This is especially true with belted magnums.
I haven't seen that with my brass, but then again I don't go through a lot of .300 Wby brass, it's not one I do a lot of shooting with.
Reloading for it uses a lot of powder.
