I think that piece you are referring to is the (standing) ejector that protrudes maybe 1/4" out of a slot in the lower left quadrant of the bolt face when the bolt is fully to the rear and in contact with the bolt stop. That ejector configuration is pretty standard on Mauser and Win 70 CRFs. It pivots and kind of rides under the base of the 2nd round as the round is loaded.
Here's a pretty normal (standing) ejector with the bolt fully to rear and in contact with bolt stop in a standard M70 or Mauser type CRF action. The rifle is lying on it's left side in the pic. Is the the piece of metal you were referring to?
