on the list
the headstamp is listed as
SAAF not SAA
I emailed ECRA months ago about what it meant, they never responded.
Could it be an internal ECRA cartridge number?
That was what I found. I have a lot of the lake city 223. I also have old military 30-06 that I had to punch out primers with a punch ( crimped in) and then ream the primer pockets before reloading. Certain old military cases have two small flame holes instead of one. I throw them away. Seem to me they were old 6.5x55.