The one I was loading for is from the late 1930's, has a five digit # and the barrel is stamped "300 MAGNUM" the 3 position safety works the oposite direction of a newer M70, and many years ago someone had a red rubber recoil pad put on, it was disintegrating so we replaced it, and it had a 7/8" weaver M330 scope with a post reticle, which we took off and put on a leupold 3x9. it will shoot 1 - 1 1/2" 3 shot groups any time.