RE: Remington 798 or Sako
Between these 2 rifles I'd choose the Sako. Outstanding builtrifle andaccurate.It is a bit heavy as you say.
For a 6 3/4 lb rifle made with the same barrel as the Sako, very fine built rifle, made in the same factory as Sako take a look at one of the Tikka T3 rifles. It does make a difference with a lighter rifle hiking up and down mountains. It'sa very accurate out of the box rifle.