I would prefer the Rem 700 to the Ruger action for a couple of reasons.

Firstly, it has about the biggest recoil lug of any action and more stock material behind the recoil lug. There is no need for a barrel recoil lug in 416 calibre with the Rem 700.

Secondly, any and every scope mount is available for the Rem 700 action.

And Rem 700s will feed upside down

And if want super relaible feeding then get the HS Precision vertical stack magazine for the Rem 700.