That kind of had the look like trap shooting to me also. I think the wood block would have been asymetrical if it were for a one eyed, cross eyed shooting.
Maybe, if there's no finish color difference under the wood or rub marks where the leather would have cinched down, it might not have been on the gun much. Just on appearances, the outer notches don't look like the comb of a stock would be much use. But, maybe the thought was built in lead and high impact point for spot shooting if someone could get it all sorted out quick enough when the bird shows?
