That would be interesting if it truly means a choke at all like we think of it today. Unfortunately language changes so much over time, it could have a completely different meaning. The thing is, I'm not aware of a single original fowler or shotgun with a choked barrel. In particular I've always been interested in the side by side shotguns, which back then were guns of the super rich. They were the same guys who were perfectly content to mallet a ball down a jaeger rifle. Surely those same people, who could afford anything they chose, would have chosen a choked barrel. Not all of them of course, but I'm not aware of a single original flintlock SXS with anything but cylinder bores. Once you get to a certain point late in the percussion era, it seems every SXS gun had choked barrels, sometimes very tight chokes.
I can't help but think that the only reason they were all cylinder bore, was simply because the technology was not there, or at least not understood. I'm far from an expert on this stuff, so if there ever was an original with a choked bore, I'd sure like to hear about it.