Not anymore. Face to face purchases of "used" off-roster handguns are still allowed in California, but in practice that usually means a big markup by people who always seem to have a few off-roster new in box items they suddenly decided they don't want to keep. Only LE can buy them new in state, or they can be brought in by someone moving here.
It's theoretically still possible for a manufacturer to add a revolver to the roster, however a fairly recent law requires that three be removed for every one added. That's effectively shut down anything new, only one handgun has been added in all of this year so far. The restriction has been challenged in court of course, https://www.courthousenews.com/gun-l...ster-advances/ who knows how many years that will take to get through appeal and en banc.
Because Colt got in the game late, they have only nine on there, the 4 and 6 inch Pythons just squeeked in. No 3 inch Python, no Anaconda's. It's especially absurd that a 22 LR target revolver almost certainly won't be added. I checked, no exemption for rimfire.
Ironically, it's pushed me to buy more 50+ year old stuff. I have an 03 FFL for C&R, and a state Certificate of Eligability, can walk out the door same day, no 10 day wait, with old stuff or can buy them out of state and bring them back in person and register within something like 7 days. So the last 22 LR revolver I bought was a 1952 vintage pre-model 17.
Wonder what Colt Officer's Model 22LR C&R's are selling for, do I even want to know....