For me I want to see 1-inch or less at 50 yards. That is my expectation. I have had many revolvers that will do that from a variety of manufacturers. I usually use a red dot sight to achieve these goals, and if a revolver won't get there, I will typically send it down the road. The most consistently accurate revolvers I have seen of late are the BFRs.
The Gun Digest Book of Hunting Revolvers:https://youtu.be/zKJbjjPaNUE
"Building Carpal Tunnel one round at a time"