20x102

#1

Hi all and congratulation to the new forum.

I have a empty 20x102 Vulcan round with a API “M53BG” bullet manufactured by FN.
My question, what is the meaning from “BG”?

Sorry i’m to stupid at post pictures.

Thank’s
rob

#2

And now i hope you can see a picture.

Yes…Strike…Thank’s Iconoclast.