"Neil Crafter posted a version, supposedly from MacKenzie, which claimed she hit the same/similar shot with a Brassie from 230."
Pat, I have said before and will say it again, that was a random account of the story I got off the internet, and it does not quote Mackenzie. Mackenzie's account in Spirit of St Andrews does NOT give a distance, so it is irrelevant whether you think it was 220, 200 or whatever. mackenzie said she made the carry, whatever it was. I hope that is clear!! Any accounts with the distance added are later embellishments that Mac did not include.
While Geoff says that Mac was there when Hollins made the shot, Mackenzie's own account goes against that.