That would be a Savage 99F, barrel should actually be 22". Nice featherweight.
Don't rechamber it, the internals are too short to handle a 308 length chamber. The internals changed starting with serial number 900,000. You're pretty much stuck with 300.
If you reload, try any medium load with a 150gr or 180gr bullet and it should kick a lot less than the factory 150's. Still kills deer just as dead, too.
