Ruger model 77 bicentennial edition in 30.06 from 1976, what's is value?
It depends on the condition. At a recent gun show, a guy had about 6 of them, brand new and still in the boxes. All pre-warning from the early 1970s. He was asking - and getting - $500 for them.
The bicentennial edition does not carry a premium over similar age M77s.
I hope this helps a little.