If you are looking for opinions, I personally would not own a gun made by Pietta. My personal experience with Pietta has never been good at all,and returned 3 of them to Cabelas. I found the guns to be poorly made, lousy parts, , scratches (tool marks) etc., and tend to be non-functioning. Most of my acquaintances have had to replace parts and do some gunsmithng to get their guns to function. I find that Uberti is a better made and finished gun---my Army .44 is one beautiful gun, with a fantastic trigger and quite accurate. I am not familiar with the R&D cylinders as I don't use them, however I know several shooters who use them in CAS, and are quite happy. :hatsoff: