Tato, that's a chukar and a Hun, right? (I've been out of Idaho so long I can barely recognize my old foes...). When I lived there I had an LC Smith Featherweight Field 16 that had a high rib and was also US (Army Air Corps, no AF then) proofed. It had come all the way from the Syracuse Army Depot to the Idaho Panhandle only to get traded for a rebuilt engine back in Upstate New York in one of my dry spells ten years later. Damn shame; I made the best shot I've ever made with that Elsie; a double on supersonic chukars coming down canyon straight at me. Took one coming and one going; gun was IC/Very full.