I too am very concerned about some of the things I have read on other forums, some of these experts are lucky to have not won a Darwin award. Here is a recent posting on another forum:
“Been lurking here awhile, but wanted to mention that having gone through a BUNCH of shotguns over the years, my first really good gun was a Fox serial #ed around 1907. I still have it and it has killed geese to quail for me for almost 40 years with chambers lengthed (I guess) to 3" and 32" bbls. I have, in my foolish youth touched off both barrels apurpose with 1 7/8 oz. of BB so can attest that unless the gun is butchered in some way, you needn't be concerned (steel shooting excluded) about strength of a Fox.”
http://www.shotgunworld.com/bbs/viewtopic.php?t=93519