Nothing wrong with the good old .303!
As long as you have good eyes then the military sights will be more than sufficient, but time doesn't discriminate & hence either groups suffer (unless your Daryl!) or you have to have some help optically - peep or scope.
I do however believe that there was a scope mount that used the military rear sight base on the .303 & then a pistol scope was used to achieve visual aid.
Its your little gem, to do so with whatever you wish; doing plenty of hunting with we all hope!