Chuck, the shotgun in the H&H video was complete with ribs in place. The only "regulating" done was for pattern only. They did show the POI regulating of a double rifle and that did involve loosening the rib and adjusting the barrel wedge at the muzzle. I'm inclined to go with what Jack Rowe recently told me: shotgun barrels were not regulated for POI unless something was badly amiss. He pointed out how much POI could move by just simply varying the loads. I loved his closing comment, "my goodness, it's a shotgun.....just shoot it!"
