I have Ellis Browns book, and do intend to contact him to see what has to say. Some of the posts and the Greener book do talk about paradox guns and their accuracy, even found out that not all paradox guns had complet rifling, but some just had the last 10 inches or so. They were bored very differently than our modern day chokes with much deeper grooves, but were also made to last for decades. At my age, two more decades, and I'll be with the Prince......I hope.......Still interests me a lot though, and so will most likely persue the idea.
TC