If you are interested in used , H&R made many models, and barrel lengths of their 22/22 mag convertible, as well as a couple 22 mag only revolvers.
No longer made but if you watch the online auctions, you can find some really nice ones out there, and they wont break the bank.
Well built, and good shooters.
Here's a pic of my convertibles, only one set of doubles in the pic.
As you can see, there are many choices out there.