Originally Posted by ellenbr
A bit more food for though on this German made Jos. Michaeli we have touched on prior. (...)
How easy is it to alter a 16 bore drilling to a 20 bore and just cross out the 16 bore stamp?

In principle, I may not shy back from offering what might end up to be a stupid question or a silly musing. I see that rather as a win-win-situation.
Either I succeed (inadvertantly, and possibly due to my ignorance) in making people laugh or smile, which is not a bad thing in a forum, now and then, rather than spewing hate.
Or I get set straight, and have to chavce to learn something new or to unlearn something old. Either way, it's fine.

So, I see two possibilities:
- the gun's shotgun barrels may have been sleeved from the front (but the joining step would have had to be distinctly farther forward than usual], or
- the gun's shotgun chambers may have been sleeved from the rear, leaving the remaining old barrels quite overbore now; but this was not necessarily always seen as something bad.
[Clarification: when I wrote "sleeved from the rear", I mean what Americans call "permanent chamber inserts"]

Carcano