Russ; I think you may be on to something there though I do not personally feel qualified to answer the question as you state it. Looking forward to seeing others answers. I will add that I feel like there is a definate difference in twist bbls from the better makers, even though on there lower grades, such as H Lefevers, P Parkers, B Bakers etc than the ones found on JABC's. Another aspect I gather from Greener was that he felt they were more apt to break if receiving a sideways hit on a sharp object than a damascus bbl. This of course has nothing to do with strength in shooting.
Miller
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Miller/TN
I Didn't Say Everything I Said, Yogi Berra