Argo, we do pretty much the same thing with barrel/bore as the French do with "canon". In my part of the world, where most deer hunting is with shotguns and slugs, you often hear the term "rifled barrel" when someone is referring to a rifled bore. And French rifled bores often confuse Americans. The standard assumption is that they're for shooting slugs, when quite often French woodcock guns are set up with the first barrel rifled--but to produce a more open pattern rather than to shoot slugs.