I had a good conversation with gunmaker. One issue is that an action the size of a 16GA shotgun does not make a petite rifle. You can do OK with large calibers like 45-70 and rifles over 40 caliber, but the little stuff like a 30-40 Krag with heavier barrel walls will make a 9 pound plus gun. I'm not going to carry such a beast. If you look at most heavy caliber double rifles, they are on 20 gauge size actions. I have a VC 9.3X74R DR and a Merkel DR drilling in the same caliber, and both are on 28 gauge size actions.