Send it to me! I'll give you an honest opinion as to how it shoots and return it to you cleaned, I promise!
Another idea is to contact your local gun club/sportsmen's association. I'll bet you would find plenty of volunteers to shoot it for you first and show you how to safely handle it and clean it. You've got a great gun there!
A few easy checks regarding how the cylinder rotates and locks up and I would not hesitate to shoot it.