Sorting brass

 

89 grains. 

There are at least four companies that used the PS headstamp. This piece was probably made by Poongsan Metal Manufacturing Company Ltd., Seoul, Republic of Korea (probably at the Angang Ammunition Plant).

More than 101 grains

CBC = Companhia Brasileira de Cartuchos, Avenida Industrial No 3330, Santo Andre, Estado de Sâo Paulo, Brazil. This photo has a good image of the crimp-marks (3 of them) on the CBC headstamped piece.

MON; no information. Maybe it was made on MONday. 

3% of the lot of ammo that I am working with is over 101 grains.