The existing regulations and the proposed schedule 1, clause 96 in particular, would not apply to the Weatherby Mark V if it's chambered for a calibre that produces energy of less than 10,000 joules. These are ordinary, common calibres used by hunters in Canada. There are lots of calibres available and lots of calibres in common use that are nowhere near as energetic as 10,000 joules.
On December 6th, 2022. See this statement in context.