I was hoping the second RPM cartridge was going to be .358 bore. A bore size Weatherby has ignored thus far.

A .250 grain in a Whelen is typically about 2400 fps. In the .358 Norma 2700 to 2800 or so.

If Weatherby had the .358 RPM with a 250 grain going around 2600 from a 22 inch barrel that, imo, would be the sweet spot.

A longer and thinner .350 Rem Mag that fits four down in their 6 lug action is what they should have made.