If talking about simplicity, strength and extraction it would be a Farquharson based action. Probably one of the the greatest of hunters, Frederick Selous, loved the reliability of his Gibbs Farquharson in Africa, they don’t come any more rugged. Today you can buy the Ruger No 1 as the most affordable design or buy the Luxus Model 11, Dakota Model 10 or Martini-Hagn. Obviously you have to be comfortable with a single shot.
