I just accidentally tripped on this thread, but found the information absolutely invaluable. I have a B0000XX that I bought used in 79 or 80. The owner threw in 50-60 pieces of brass and I still have the owners manual somewhere around here. One of the most fun rifles I've ever owned!
Give me your tired, your poor, your huddled guns yearning to shoot free,
The wretched refuse of your teeming safes and gun racks.
Send these, the homeless, tempest-tost to me, I lift my lamp beside the golden door of my workbench.