Plugging Hawks load for .300 Win (180 gr @ 2960 fps) and his .280 (160 gr @ 2800 fps) into LB3:

The 8-1/4 lb .300 generates 28.6 ft/lbs of Free Recoil Energy and Recoil Velocity of 14.9 fps.

The 6-1/4 lb .280 generates 22.2 ft/lbs of Free Recoil Energy and a Recoil Velocity of 15.1 fps.

A likely load in a 6-1/4 lb .30-06 (165 gr @ 2900) generates 24.3 ft/lbs of Free Recoil Energy and a Recoil Velocity of 15.7 fps.

For what any of that is worth....