Expanding ammunition.

[sarge4318]

Section 5 expanding bullets are, in law, prohibited ammuntion.

No, ammunition [i]containing[i] expanding bullets are prohibited ammunition (S5(1A)(g)).
FA1968 (as amended) S5(1A)(f)(i) -
Classed as a missile;
"designed to be projected from any weapon and is designed to be, or has been, incorporated in;
(i)any ammunition falling within any of the preceding paragraphs;of ammunition from (1A)(g), not ammunition."

The Act specifically says "not ammunition" when referring to bullets (or missiles of ammunition) in this instance.

It is quite unequivocally the law.

Only when it is correct.