DaleH, welcome to the forum!
This discussion of convertible revolvers happens often. Instead of providing a link to a previous discussion, I borrowed a little snippet from one of my previous posts. We've all got our own ideas of what works well. :mrgreen:
...one of my all time favorite revolvers, and my most accurate SA revolver of any kind, is my NM Blackhawk .357/9mm convertible. For the miniscule 9mm cartridge, it is a tank. I always hoped they'd rekindle the slightly smaller stainless Flattop convertible in .357/9mm, and with the 4-5/8' barrel. I got my wish. Some of these Flattops had serious issues with front sight height, so it took me a little time to get the front sight whittled down to a usable height, so I haven't yet shot it nearly as much as my full size Blackhawk convertible. I expect this smaller version will completely replace the larger one, for my use.
I also have a Flattop convertible in the 45/45ACP with the same barrel length and I'm well pleased. Had a couple chambered in .44 Special, which were also pretty wonderful.
To compare the two, side-by-side, it's not easy to visualize the differences between the two revolvers, Flattop and full size. But in the hand there's a pretty substantial difference, and I really like the Flattop grip frame.
But here, it's easier to see the difference in grip frame sizes, the Flattop being smaller.
WAYNO.