India (?) 7.62x51


#1

I have 7.62x51 with the headstamp “O.K. 77 7.62 A”. I think this is made in India. Correct? What does the O.K. stand for and what does the “A” after the 7.62 mean?


#2

The letters “OK” stand for "Ordnance Factory Khamaria, at Jubbulpore, India.
I do not know what the “A” after the caliber marking means. The same “A” appears on a “57” and “58” dated 7.92 x 57 Besa rounds that do not include a caliber designation. One guess I heard, and it was just a guess, was that was India’s designation-letter for ordinary ball ammunition. I have no idea if that is true or not. The 7.9mm Besa rounds imentioned are ball rounds.


#3

John–Thanks for the info. I was guessing that O.K. stood for Ordnance Factory Kirkee, so I’m glad I asked.