Well, it's going to be
Yellowstone 1932, so it may not be a straight, horses-only Western. A mix of
1883 and the modern-day, Costner-starring one? But I suppose there will be horses, gunplay and stuff in such a story. So an early-20th century western, vs. "old west" as we normally picture.
Yes, Ford is well past the point of believability in the action/active stuff. He comes across better playing roles like Branch Rickey in
42 or his character in
The Age of Adaline. Just regular guy stuff. Don't we have Ryan Reynolds, Robert Pattinson, Chris Evans and others for all the "jumping around, fighting-nine-people-at-once and shooting stuff" fare, two decades into the 21st century?
Nobody's buying that shit from Harrison Ford at this point...the man's going to turn 80 in less than two months. It's asking a lot of audiences.