In the US they are using these air rifles for 400 plus yard gopher kills. Very impressive to say the least. Bison, deer, the new fad in hunting.
Some suppliers in Canada selling these types for a few years now, just all under the radar of the masses, so no one was talking about them.
https://www.youtube.com/watch?v=_laGWKqC7wU
There is typically someone selling these big bore air rifles at the Brandon gun show, but we need Manitoba hunting laws to catch up with the technology for them to be useful here.