They make a 458 Winchester AR auto mag.
https://www.petersenshunting.com/editorial/nemo-omen-458/272789
That’s very interesting to me. The .458 Win Mag case is belted, so when fired it headspaces on the belt in a bolt rifle. I wonder if they kept the cartridge case dimensions the same but redesigned the case sans belt. Just the musings of an old Marine Corps armorer and gunsmith. I want one! Probably a little more punch than I need to knock down a 175 pound Kansas whitetail deer. Regards.