Hi I have a Superposed P3 that had Briely thin walls and a miller trigger installed by a previous owner. Although I probably would not make the alteration myself I also think it does give some additional flexability. Ofcourse with proper loading and testing of loads you could do the same thing (if you have the time). Heaven forbid mine is even a 2 barrel set 28" and 32" and both have been altered.
Jeff G