Stan,
I had them do my 12g BSS maybe 20-22 yrs ago. I've been very happy with them. BSS barrels are extremely thick. Briley has done thousands of barrels, maybe tens of thousands. I'm sure they have screwed some up, but I'll bet it's a very very low number. But a company like Briley should make good on something they screw up. The cost of a gun to them has to be a drop in the bucket, so I would think they'd make good on a gun that's replaceable.