I lived in Sun River 14’ , 15’ and 16’ spent most of my time in Upper Deschutes between 3 Sisters and Bachelor. Poked around in November each yr and never could quite pinpoint a rhyme or reason to seeing the mature deer. They just kind of appeared in the pines and juniper and then were gone. No real congregating of herds it seemed, I had heard those winters were fairly mild so that could be skewing what I was learning.
Spent little time around Camp Sherman. Never saw a true giant but enough decent bucks to dream of drawing. Never happened, then I moved.

Would love to someday head back to shed hunt some of the areas I learned. Good
Luck in your search!