Like any .22, I would suggest trying a variety of ammo. Buy a box of each, then shoot a cylinderful against a paper target at 25 yards from a good rest.
This will show you which ammo is the most accurate -- and the cleanest burning.
More than any other caliber, .22 rimfires seem to be particularly persnickety about what flavor of ammo they're fed.
To me, particularly in revolvers, accuracy comes first. If a load is dirty, but delivers outstanding accuracy, I'll take tight groups over cleanliness any day.
If a load is accurate but dirty, and used in a semi-auto, then I'll reconsider it because I also want reliable functioning.
Revolvers, being far more reliable than semi-autos, can shrug off dirty loads much longer before functioning is affected.
I like to shoot at least two cylinderfuls from a 5 or 6-shooter, but in your case 10 rounds will be enough to show the accuracy trend.
Label each target with the type of ammo used, and save it for later reference.
It's handy because the proof is staring at you, with each target. Forget which ammo is the most accurate? Just go to the filing cabinet to refresh your memory.
Cleanliness is not as important in a revolver as it is in a semi-auto, in my opinion.
Accuracy is King and only hits count.