Stock shape is important to proper eye alignment with any sights, but also important to minimize felt recoil and cheek impact.
Many old double-barrel shotguns used to have way too much drop at heel and comb. The guns would punch the face and climb at the muzzle. Modern shotguns and rifles generally have better stock shape, but some still don't cut it.
Over the years, the rifles/shotguns that had fit me best and control recoil have been Remington 1100s and Rem 700s. Some others are very good too, including Winchester 70s, Tikkas, and my Franchi O/U.