In a word, Yes. The shot loads are for short range (about 8 feet) use on snakes. The beauty of a revolver is that they are more versitile than a pistol. You can use any of the .22 rimfire family as long as they are not "magnums".
There is even a load called Calibri which has no powder, only primer. I understand that they are good for rats, etc. I've been using an air pistol for those nasty Citrus rats we get around here. (I live in a former orange grove.)
BTW a #970 is on my short list.
I see there are the numbers 31 and 20 in your post. I have no idea what those are about, so my answer has nothing to do with them.