This is a double post, but I think it needs to be here as well

So the only things we can definitely say are: most of the trials No4s appear to have been converted, but definitely not all.

I finally started a spreadsheet in Excel and have about 30 rifles recorded so far, 6 are not converted to No4(T).

Maybe it can be posted somewhere it is visible to members only Badger? (There are issues around confidentiality I suppose, though the initials and monikers of owners can easily be removed as well.)