I made STLs out of all the data I could find (plus some measurements of my own) for Dillon locator buttons. Can't find info for #6, but that is for Short or Super Short Mags, which I don't and wouldn't reload on my 550 anyways.
I still need to print out to test, but once I do I will post to either github or some other repository and will link you.
If anyone has dimensions for the #6 pin, let me know.
Almost wonder if ABS shellplates could take the stress from sizing some cartridges, hmmmmm
Steve