I called TC one time to ask a similar question, and was told that all their records were destroyed in the big plant fire they had years ago...and I think TC used a block of serial numbers per caliber.
Also, as interchangeable as the parts are, when buying a used TC Hawken for example, there's no guarantee that the barrel & stock are the same ones that left the factory as a married set...TC Hawken (and Renegade, etc) locks, stocks, and barrels are bought and sold separately all the time.
One long shot might be to call TC and speak to one of the guys in the repair department who's been there for a long time...he might have a working knowledge, for example, that all .50cal 45xxxx's were made in the 80's, or something like that...just a thought