Alternatively Armed Armies

[Kellhound]

In Spain is a "trabuco", and the bell shape make them fairly easy to load.
It's fairly popular with muzzleloading communities and some folk festivities in several zones, so there are quite a few around, and in a post-nuke situation you could find some small towns armed with them.

Besides, it's very traditional here. Where have you seen a Sierra Morena bandolero without one?