outdoor,
A word to the wise.......Please! An old Savage 99 will lose considerable value IF you were to reblue. The reason is that a true rust-bluing is in fact a rusting process that requires that the Smith heavily buff off the oxide created while rebluing. This is evident in the stamped lettering on the receiver and barrel (it smears out the sharp edges of the lettering). If you value your '99 then keep it as is and enjoy the story it tells. Finally, if the lever has lost some or all of its characterist case-hardened finish....do not blue it. Some gunsmiths can do the proper case hardening finish in a furnace. If you need to touchup the bluing consider using ColdBluing to do limited areas.
Jim