I think I want to give this a try. Anybody doing this? What are you using? Is there an affordable reproduction double out there worth owning?

Read these.
Might help you out.
http://www.namlhunt.com/ml-turkey-shotguns.html

http://www.namlhunt.com/mlturkey5.html

http://www.namlhunt.com/mlturkey4.html

http://www.namlhunt.com/mlturkey3.html

There is a list of all Toby's articles under the "More" heading.

You can send Toby emailed questions and he'll give you solid answers