I was looking around Ebay and saw these. Thought they might be of interest to the group?
S&W 629 4” barrel & cylinder
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=412938893
Used 7 shot Bauman cylinder for S&W N frame
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=412981899
S&W 629 4” barrel & cylinder
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=412938893
Used 7 shot Bauman cylinder for S&W N frame
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=412981899