Well the gun is choked Improved cylinder (actual 7 thou.) and three eighths (actual 13 thou.). It's possible that it could have been originally a cylinder 13 bore then rebored with chokes (and reproofed?). But that's a lot.

I'm more worried about the Reilly data-base though, because this is not a one-off incident. There are several Reilly's post 1875 without the NOT FOR BALL stamp.

Baluch are not Brahui, Brahui are Baluch