Must have to call them. There is a review written in this month's electronic issue of their magazine. There is a link here on Historic Shooting for the magazine under publications.
http://historicshooting.com/mybb/showthr...p?tid=2005
I have one of the ones made by CPA. My wife got it for me and it is very nice. It is quite a bit more than the C.Sharps one and takes shellholders that are only available from CPA and are a little expensive. I like it a lot, but now that C.Sharps is making one, I would highly consider it.
hope this helps, Cody