I am looking for any information on building a good single shot turkey gun. I am not looking for a spot shoot gun. Currently looking at using and H&R or CVA 20g. Have any of you guys built these with success? I will probably send it off somewhere to get the barrel tapped for choke tubes and a mount for optics. I may even get the forcing cone lengthened. Any information you guys may have would be greatly appreciated. I wouldn't be against buying one already built but you just don't see them for sale.