Ultramax, Independence, whatever the stuff is at Cabelas in big tubs...
Do they change the headstamp of the ammo they load somehow?
Independence does; I have some of their stuff and it has the *I* headstamp on it. Though I've heard they are reloads, and their bullets are definitely plated-quality rather than jacketed-quality.
Never bought any Ultramax or Cabelas boxes, or any other commercial reloads.
Black Hills uses Winchester brass and doesn't re-stamp the headstamp... but I don't think they do "reloads." Just custom loads in high volume as an initial manufacturer.
What stamp is on Buffalo Bore, Garrett and those other boutique shops?