I wanted to add dancing banana's to the reference to banana clips, just did not push my luck...
I wonder what Mauser one would use to build a .375 Ruger on? I may do just that, or simply go buy an Alaskan.
42 to go.
I would recommend a commercial Mauser 98 action. These would include FN's, Browning FN, JC Higgins M50(FN), Zastava(Interarms, Charles Daly, Remington M798). A commercial action will come scope ready(ie drilled and tapped, low bolt handle and low safety). Make sure the magazine box is .30-06 length(3.4"). I used a JC Higgins that started life as a .270 Winchester.
Decent military 98's are suitable but need to be modified to accommodate a scope so there's some extra cost there. Another issue with a military is the bottom metal. Often the magazine box has been made to fit shorter military ammo(8X57). Also the trigger-guard need thinning and narrowing for a nicer look and the guard screw lock screw holes need to be filled.