This person, who refused to identify himself, posted a long thread on Shotgun World in 2011, having 'borrowed' extensively from my website and posts, and Wikipedia.
This thread includes a summary from Zircon of his metallurgical evaluation of the Parker barrels on p. 2 and, if you can endure the verbiage, he eventually summarizes Sherman Bell's study on p. 3
He hasn't posted on Shotgun World since 2020
https://www.shotgunworld.com/threads/black-or-nitro-powders-for-damascus.259371/