The question, as I understood it to be, was about the Ruger No. 1 rifle and whether it was prohibited. My answer is that some Ruger No. 1 rifles are prohibited, in particular those that are chambered for a calibre capable of producing 10,000 joules of energy or more.
Versions of the Ruger No. 1 rifle that are chambered for ordinary hunting calibres, the type that someone would use in Canada for hunting deer or moose, would not be prohibited. In general, they would be non-restricted.