I'm telling you we need to come up with a different term since bore size is so convoluted.
Maybe a on line survey!
Ask people what adjectives they use to describe trumpets with a small bore verses trumpets with a large bore and what trumpets they attribute this to.
From there, devise a term.
Damned I wish I knew how to put together an on line survey.
If any of you out there in cyberland are music majors and need a thesis idea or a doctoral student in search of a dissertation topic, here's a good one!