British 1796 HCS pattern blade shape

[Triarii]

Random question, as I've lost my notes; about the modified point on the British 1796 HCS.

I read two examples which indicate that the changes from hatchet to spear point potentially happened some time before the 1815 campaign, which is when it is commonly assumed to have been implemented.

One was about a duel where an HC officer accidentally kills his opponent and a witness says it was on account of the sword point; EDIT: Actually a dispute at a barracks amongst an officer and trooper of the 2nd DG April 15, 1814 - details later.

And another incident where a trooper falls off of his horse (my memory says this was 1812 and in the UK) and is presumed to be mortally wounded by his sword landing hilt down on the road and he lands head first on it.
EDIT: My faulty memory, this was an 18 LD in 1814, so using an LCS. See later post.

I'm sure one of these events was recounted here. Can anyone help?