I agree that the proof of the pudding with welded barrels is the proof test. However, I think that we are just going to have to agree to disagree re Twist and Damascus. If I was going to play Damascus roulette, I would do so with a three iron Damascus barrel with thick walls with the highest possible steel content like the one that fared best in the Birmingham test or with a gun like my 2 frame Parker GH grade gun with three iron Damascus that Tom Armburst blew up by finally taking the pressure to over 30,000 psi. I definitely would not play roulette with a gun with twist barrels.