Related Rule
South Africa
Practice Relating to Rule 78. Exploding Bullets
III. Military Manuals
South Africa’s Revised Civic Education Manual (2004) states:
i. Prohibited Weapons. The following weapons have been prohibited:
(1) Explosive Projectiles Under 400g. St. Petersburg Declaration renouncing their use in 1868. 
South Africa, Revised Civic Education Manual, South African National Defence Force, 2004, Chapter 4, § 56(f)(i).