RE: Does any1 know where I could find a 7mm Mauser?
Not trying to split hairs, but your question can be interperted in a couple of ways. Are you loking for an actual Mauser rifle in 7x57 (AKA 7mm Mauser), or are you looking for any bolt action rifle in 7x57? Makes a difference. The Mauser rifle would be a surplus military, most likely, and you would need to check with surplus dealers, gunshows, or on line auctions to find one.
OTOH, most manufacturers have chambered bolt action sporting rifles in 7x57, and one should be easy to find.
7x57 is a great cartridge, can hunt anything with horns in the US. If you can't find a 7x57 to suit you, the 7mm08 would be a good second choice. More available, and ballisticly almost identical.