I saw this over on AR but I'm not sure it has been Gazetted yet as a regulation. We need some input from our Southern African members.

It certainly seems very 'conventional' with no allowance for modern (expanding mono-metal) projectile designs that rely on velocity with lighter weight which aren't my cup of tea anyway

Apart from solids for Buff it seems rather sensible but eliminates choice if followed exactly. If implemented I guess it opens a legal pandoras box if things go sideways and the wrong weight is being used.