Hello, welcome. Believe it or not, those old guns (and other double actions of similar style/vintage) are still used in some Cowboy Action Shooting side matches. You might ask around through the Single Action Shooting Association (SASS) website, or any local gun clubs that hold those events.
They are considered to be difficult to keep in working order for more than a modest amount of shooting. For good reason the design was improved upon and set aside in a relatively short amount of years.