Home Forums Hunting & Shooting Hunting Rifles When were they manufactured?

Howdy all --
I am inquiring for a friend on his newly aquired rifles. Can anyone give me a range of years when these serial numbers were made.

Savage 24V series B (20 gauge over a .222)
serial number B722XXX

Marlin 336 CS (30-30)
serial number 17057XXX

Thanks for any help.

Mike.