ORIGINAL: DannyD
Buddy just called and said he has Winchester Model 70 that has the words "300 Mag" stamped on the barrel. He says it does not say 300 Win Mag or WSM or WBY Mag etc, just 300 Mag. What cartridge is this?
IF it is a pre-64 M70, it is most likely chambered for the .300 H&H Magnum, rather than any of the ones you listed. IF it is a pre-64 in .300 H&H, it is worth more than most other calibers would be....