The twist I apply to this is that Bell says much the same concerning the generic category "twist", Doc. Have shot damascus guns with twisted composite rods as part of the fabrication process (three with black and a very few smokeless reloads) but not twist with no twist in the makins. Wasn't going to say I had out of respect for the question which appeared to address the use of a barrel whose visual appearance IDs it as the nominal "twist" of sales literature, but now the higher larnin' has entered, I guess I can or not. So, yes, (or no), I have never shot a twist[sic]-barreled gun. I have always considered the visual tells of twist and damascus as very distinct by that "ships of the world" shorthand that most of us employ to get thru the day.

jack