I don't believe this is a TCA barrel. T/C made and marketed these barrels a number of years ago, and I believe they were marketed through the custom shop, which in its early years may not have yet begun to be called Fox Ridge - don't know. I also don't recall just what these barrels were called, but they had a specific name. Several months ago, however, there was an article about such T/C barrels in One Good Shot, the magazine of the TCA.
RonF