WELCOME To The Forum ! And secondly, THANK YOU for showing off your extremely interesting & awesome, 'confirmed' USAF RVN era Revolver !! In all my years of collecting & related pursuits, I've not come across very many of these particular USAF Models, so you are indeed very fortunate. Now, you'll need to pick up an USGI Box of RVN era .38 Special ammunition, the 130 grain FMC issue Ball.Although some very similar Loads are currently available, they tend to slightly different than the USAF Loads, in which the 130 gr. Ball projectile was seated quite deep in the case, enough so to be immediately noticeable when viewing it against a standard .38 All. Loading of the era. I used to recall the U.S. Military Nomenclature for that Load, but it's slipped my mind at the moment. A quick search on the Web will provide you with the data. Congratulations on your acquisition of a beautiful U.S. Martial Revolver.
Best, dpast32