I have a mauser that was given to me by my father in law. I thought it would be cool if i could redo it all and give it back to him as an xmas present in like new beautiful condition. the action has pits in the metal. shoud i just get a new bolt or is ther some way i can smooth iit out and clean it up shiny and new???? Also he doesnt know the caliber and idont see any markings on it. anyone want to volunteer there expertise and help me id the caliber. thanks everyone.....