In probably the late '60's, I had some .308 ammo marked "Amron", and some that had a grove cut all the way around the head, removing all headstamp markings. Memory is fuzzy but I believe I also had some headstamped "Browning". It was all 150 gr pointed soft points and, other than the headstamps, appeared identical and shot identically.
It also occurred to me that it may have been loaded by Norma.