Beyond the obvious of stock design (drop), recoil pad, etc, some are just born to be badder than others.
Not sure of specifics, but I do know some are nastier than others.
I had a M700 Classic in 8mm Rem Mag and one in 375 H&H.
Both identical stocks with the same pads, holding actions and barrels that were identical, and both touching off a large case full of powder.
The 375 was a big shove, and quite manageable.
The 8mm Rem Mag was a very sharp, very fast "snap" that was thoroughly unenjoyable.
