New 5.56 rounds

[SAnd]

Dum-Dum Arsenal was an Arsenal, British military facility located near the town of Dum Dum (near Calcutta) in modern West Bengal, India.
http://en.wikipedia.org/wiki/Dum_Dum_Arsenal

I'm sure other people and armies were looking into it also.

[SNAFU]

Dum-Dum Arsenal was an Arsenal, British military facility located near the town of Dum Dum (near Calcutta) in modern West Bengal, India.
http://en.wikipedia.org/wiki/Dum_Dum_Arsenal

I'm sure other people and armies were looking into it also.

Yes I know thast,notice I didn't capitalise the "D"
It is also what was called the round that was modified by cutting part of the bullet in the round.
http://en.wikipedia.org/wiki/Expanding_bullet
The Boers were notorious for making these.

At the Hague Convention of 1899 ,it was the Germans who were trying to get the round banned.They had just invented the "spire" bullet for their Mausers.
Also note the convention only covered rounds upto 400grams.