well, you mentioned you did it with 1 gun only. i was just trying to make the point that you shouldnt assume that it will happen to all guns because it happened to 1 gun that you experimented with. so, try it with a few different guns before you offer a qualified opinion.
i think everyone knows that you cant just do 1 test to come to a conclusion as there are too many variables to say that a cotton patch WILL blow up a barrel. caliber/gauge and style of barrel (heavy, light contoured, etc) would likely have an impact on the outcome. i dont know if temperature or length of the barrel would affect anything though...
btw...because you blew up one barrel, that makes you an expert and im just a "newb". the almighty bigheadred has spoken, it must be correct