The Weatherby Mark V is available in a high-energy calibre, which is known as the .460 Weatherby Magnum. Weatherby rifles chambered for that calibre would be prohibited because the energy exceeds 10,000 joules.
However, Weatherby offers the firearms in a wide variety of calibres, most of which are below the 10,000-joule threshold. Those would have the same classification as they do today, which is typically non-restricted.