I had one, Mark XIX- bought it as a 44mag, but then purchased the 50cal barrel and clip- gun was real nice, real heavy, functioned great (had a few ejection problems)- about 200 rounds were fired through the gun total.
Its loud like you wouldn't believe, used to really piss off the other people at the range
(indoors). Recoil wasn't that bad (my opinion), but it was bad enough that if you really don't have a steady arm- you aren't going to hit the target where you want (if at all)- overall it was a great gun, but I sold it for other guns (wasn't getting the use out it). Oh, and that new gold nitride finish is real neat- very strong from what I heard (little pimpish though). Go for it, if you want one- it won't leave you until you get it- unless some other big priority comes up.