Re:
I have a Briton Racing Bike (no idea what it is really apart from name on bike), 531Competition frame/forks circa '89/90, that I built up with mainly Ultegra 6500 groupset, 6600 hubbed/Mavic rims wheels. Cranks are triple rings and the rear mech is long-cage, with a 32 tooth 9-speed cassette. San Marco Rolls saddle, no-name alloy seat post. Bare frame weighed 1837grm, forks 622grms, but built it with a Kinesis alloy fork that weighs 522grms. It's just under 10kgs for a 50cm frame.
In comparison I also have a 2001 Cannondale 3000si I built up from bare frame/carbon fork with 10 speed Ultegra with long-cage mech and compact 6600 cranks, Coda hubbed wheels with Mavic rims, carbon seat post, Selle Italia TurboMatic with titanium rails. It's just under 8.6kgs, again a 50cm frame.
As much as I like riding the Cannondale, feels fast for my auld legs, I much prefer riding the 531Competition steel framed bike, although a bit heavier it's way more comfortable on the road.