Yes flying from Texas to Chicago with 2 rifles in a hard case. Only thing that didn't show up. They ended up tracking it down in Vegas. Was a long night waiting for them to show up the next morning. We just pictured a gun case going around the turnstile at baggage claim in one of the busiest airports in the country and someone recognizing what it is and snagging them. After that we purchased one of those oversize golf bag carriers so you couldn't tell what was inside. Has wheels on it too so getting around the airport is easier. Have also had a case damaged where it looks like someone was trying to pry the case open with a crowbar in two different spots.
I have never seen firearms on the luggage carousel. I've always had to retrieve my rifle at the luggage office/over-sized luggage door and show my ID.