No.
It's a shortened version of the 475 Linebaugh, so if you have a gun chambered in the 475 Linebaugh, you could shoot 480 Ruger loads in it. The 480 Ruger is the "special" version of the 475 Linebaugh (or the 475L is the "magnum" version of the 480R). If you handload, you can use a wide variety of loads. John Taffin did some testing that showed great potential on the high end loads for the 480. I don't recall if he did any light work with it.
Chris