So many people that have been "gun people" for years or decades can be total jerks when it comes to new people in the shooting areas. These same people can't get it into their heads that these people will not practice with it like they really should, so mastering malfunction drills is a very steep learning curve. There is something about a revolver where if it does not go bang for some reason, it is as easy as pulling the trigger. And having multiple steps on a single action, I need to cock the hammer all the way back, not half way can be confusing when you are working with someone new, that are coming in with a base of zero. Guns are intimidating, and so can gun people. This is a very scary thing to many people, it is our job to understand these feelings and thoughts and coach them through this.
I can see and understand how working a single action is more complex over a double action. Generally when working with someone that has zero experience we start with some form of 22, depending on the person and how I assess their abilities that 22 might be a single shot rifle, up to a 22 automatic of some kind....we work from there.
I forgot a suggestion, the LRC is a good suggestion, and if this is for self defense I think ruger still makes them in 22mag, I think that would be my choice over the LR version.