John- that one is going to be a toughy- I have never SEEN a Browning 71. I know that SOME of the parts and SOME of the theads were different from the Winchester 71- any chance the parts you need may be swappable? If so, Numrich has those parts under Winchester 71. Those may be those parts made of powdered unicorn horn and Unobtainium.
What we have here is... failure- to communicate.