Phil Nowack
Well-known member
So, I came into a Marlin Model 90 12g O/U. I am having problems figuring out the manufacture date. By what I can tell I think it was made in the 1930's. My question is... can I shoot steel out of it? I have not identified the barrel configuaration yet. If it is a full, I understand I can not. If it is a full, can I shoot Bismouth or Tungston or Hevi-Shot?