I would never buy any gun whose chambers had been lengthened unless I could check the wall thickness right at the juncture of the chamber and forcing cone. This is a tricky spot to measure on a double. Was the reamer cocked so as to take more metal from one side? I would want to measure where I could and eye ball the chambers. This is coming from a guy whose left little finger was blown off by a burst barrel. This WR may be perfectly safe but proceed with caution. People who lengthen chambers can have no grasp of barrel stresses and turn a reamer into a deadly weapon. Yeah, it makes a lot of sense to remove metal from the most critical area of the barrel so as to shoot heavier loads. That's the ticket.
nial
I and I suspect others here would be interested in the specifics in regard to your unfortunate burst barrel experience.
Jim
