RE: Scope mounts for WWII mauser
I have used the Leupold/Redfield Jr. type of base & rings(the one with the windage screws on the rear of the base) on many Mausers with satisfaction. You will need to have the bolt handle altered to clear the scope as well as install a low-scope type of safety lever.
I tried the "scout scope" setupon a military Mauser, and did NOT like it.