For no particular reason other than my own personal prejudices, I like Mosin Nagants more than I like Mausers. I also like the price I pay for 7.62x54R and the fact that the ammo is much easier to find. I have two Mausers (Yugo and Turkish), and I've never shot either one of them precisely because of the cost and scarcity of 8mm ammo. Recently, I picked up two spam cans of 7.62x54R (440 rounds/can) for $75 each. I know that Mausers sell for more usually than Mosin Nagants. For that reason alone I'd take the Mauser and (as I think someone has already suggested) then trade it for a pair of Mosin Nagants.