A friend of mine bought a Ruger bolt action .458 Win. Mag. from an Alaskan Big Game Guide who was going to Africa to be a Professional Hunter. The guide told my friend that he was going to have a Ruger Red Label O/U shotgun converted to a big bore double! Sounds like a cool gun, but I never heard the rest of the story. Don't know who was doing the conversion, if the guide ever actually got the project done, and if he ever made it as a PH??!!