6.25 x 43 British Xpl

I just bought this British 6.25 x 43.
What do the two green lines on the base mean?
Thank you for your help.
Have a nice day.

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They are usually called “blobs”, an internal marking system that I’ve never seen explained.
Did you recently acquire an advanced collection?

I bought several rounds of ammunition from a friend, many of them experimental.

They are used to identify the load/bullet type but we do not have any documents to say what each dot, blob ar splodge means unfortunatly, mine has a big red blob but dont know what that means.

You have to also remember that the case was just used to test fire different loads and bullet types, this was never meant to be a cartridge that would be issued.


Thank you for all this information.👍