Just sharing what I've stumbled upon....
...the cartridge information is rather nice 
, IMHO....
http://www.yankeegunnuts.com/2010/11/21/retro-revolver-review-ii/
...the cartridge information is rather nice , IMHO....http://www.yankeegunnuts.com/2010/11/21/retro-revolver-review-ii/
