Thanks for the information everyone.

It turns out GMS does make a 98 specifically for the 7x57 cartridge, they just don't have it on their web site. At $3,000 it's a touch steep but it will be the perfect companion tonthen375H&H that I'm having AHR build me on the GMA magnum action.

I also found out about the FZH action especially made for the construction of takedown mausers ...

A take down in 9.3x62 and 270 Win would be hella interesting, no?