Chuck,
No, not Brileys. The gun is an old GrandAmerican combo. It came with Perazzi top thread screw in chokes in the single and the bottom barrel of the double. I don't shoot much ATA trap anymore but the barrel that blew was the bottom barrel on the double.
I think Briley is great for installing thier chokes on virgin barrels. I have heard mixed reviews for work that is out of the ordinary for them.
The barrel is not horribly blown. But there is a distinct slight bulge and distortion at the muzzle.
Indeed, the barrels can probably be cut. In fact, since I am shooting more and more sporting, chokes in both barrels could be good. I just hate to lose that 29.5" lenght I like. Jake