Feinwerkbau Modell-300/300S videos by Joe W Rhea.
With thanks to Joe for permission to repost these:
Air Rifle review Feinwerkbau FWB 300s Target Air Rifle
Feinwerkbau FWB 300s disassembled step by step Part 1
Feinwerkbau FWB 300s rebuild and reassembly Part 2
Feinwerkbau FWB 300s Speed Power Tune
Feinwerkbau FWB 300 Original
Feinwerkbau FWB 300s Trouble shooting and Tips
Feinwerkbau Championship Medals 1969-1972.
Medal tables for World and European air rifle and air pistol championships that took place in Russia, France, the USA, East Germany, and Yugoslavia in the four years 1969-72.
As far as I can tell, FWB won 22/24 gold medals, including 11 world records, for air rifle, presumably with the models 300 and 300S, and 23/24 gold medals, including 9 world records, for air pistol, which must have been with the model 65.
With many thanks for these scans to Nick.
The medals table cleaned up: