The 788 does have a more slightly "closed" port than a 700 but also has base screw holes for scope mounting and a recoil lug,it's accuracy is likely attributed to the super fast lock time and action design but stiffness sure dooesn't hurt,for reference, My ss murphy precision rail weighs 5 oz's and a Holland lug comes in at 2 oz's, for LR shooting a little extra weight is a +....