Not the extent you were referencing, but I once just missed a hard chromed receiver Zoli SxS with 32" chrome lined barrels in 12 gauge. I bet it would have made a dandy duck gun especially at the price of $399, but alas I was too late and twern't meant to be. I love long tubes and I would love to try shooting a super long tubed gun. It makes me wonder where the balance point would be?