While I would certainly agree this gun should never have had the chambers lengthened to 3" it is not a given that it will actually "Blow UP" on the first round. I think we all here recall the Parker 12ga damascus which took 30K psi before her seams let go. Also someone, Buck Hamlin as I recall, took an L C Smith Damascus hammer gun in 12ga & lengthened its chambers to 3". This gun had badly pitted "Unusable" sewer pipe bbls. He started with the heaviest loads of Blue Dot listed in the manuals & went up from there. Finally quit when the gun simply refused to stay shut with the shot, but didn't succeed in blowing her up. These guns were of course "NOT" fired from the shoulder.

Miller/TN
I Didn't Say Everything I Said, Yogi Berra