I'm going to post this in small type, as not to upset some of the more fragile here. Hmmm, we don't seem to have a small font size available here, so just pretend that it is.
So, a guy named Patrick Hallum, now long departed, wrote a little book about the wonders of the Golden Mean, so maybe that's your guy.
I tried it on some of my guns and it actually worked. On other guns, with a bit of fiddling I could make it work, sometimes. And on others, I had to use already known distances to find an origin point,,, so in essence, if you didn't know the distance you wouldn't know the origin point,,, so I'd say it sometimes works and sometimes doesn't.
Now re-reading the above paragraph, something doesn't sound quite right, so probably better just disregard everything I've said.
Golden Mean??? What's a Golden Mean!
John