Which one should be my third rifle and why...

[Northern Shooter]

Well since your 470 is 4 cartridge classes greater than your 9.3 (0.458, 0.423, 0.416 & 0.375), why not continue that “spread” another 4 classes down?

I believe that puts you in the 7mm/ 0.284 class (0.358, 0.338, 0.323, 0.308).

 

[SStomcat]

Why not just get a 30-06 barrel for your Sauer? You already know the rifle. But if you must get a new rifle (and I strongly support that), look at the Rigby Highland Stalker in 30-06.

Please let us know what you decided.

Safe shooting

Yes thats an option, I guess only thing that will be needed is the barrel and ammo clip.