Frank,
Welcome to the forum. Where and how is the barrel marked? Ron had a stamp that read LONG"S LOCKS on the top line and DENVER underneath it. He stamped his locks, barrels and other items he manufactured. I have an example from a pistol he made that I can post if you would like to see.
I am also puzzled by your statement that your major concern is that the barrel is a Ron Long and his barrels have a mixed reputation at best. I find that hard to believe since he has won several national BPCR championships using his own barrels. This is the first time I have ever heard anyone question the quality and accuracy of Ron Long's barrels. From the people I know, anything he made is held in high esteem by its owner.
David