The 3 main sites I buy my Contender barrels from are:
Other sites will have them in their buy and sell forums from time to time including The Firing Line. Ed's and Graybeard are pretty dedicated to the T/C guns.
The Encore barrels will not fit the Contender frames.
"Freedom is never more than one generation away from extinction. We didn’t pass it to our children in the bloodstream. It must be fought for, protected, and passed on ... or we will spend our sunset years telling our children's children what it was like in the United States when men were free."
~ Ronald Reagan