it would be made in the 80's, and it was loaded with the Hornady 100gr spire point bullet. According to an early 90's weatherby catalog I have, it states that ammo was loaded to a muzzle velocity of 3760 fps, and the BC of the bullet was 0.307. The ballistic's was 100 yards +2.3, 200 yards +3.0, 300 yards 0, 400 yards -7.6, 500 yards -21.0
It was basicly a varmint load, maybe small deer load.
Rob