Yep, as an Alaska resident who has hunted all over the state including Kodiak I cant imagine taking a fine double on any serious hunt. A stroll below the house looking for a moose on a sunny day, sure, but any serious hunt usually involves rain, borderline hypothermia, gear getting banged around in planes, boats, or ATVs, or clattering across rocks when it falls off pack frame.
I would guess this picture was taken sometime in the 1980s, looks like a digital watch on his wrist. Here is a great interview with Joe not too many years ago here in Fairbanks. It would be awesome to be able to ask him about this rifle, I think he is still alive.