The cradle cap screws should be staked but there is no engineering reason for it on a single shot bolt action rifle as by definition, they are taper lock! and as a rule of thumb, No4T's don't do a lot of machine gun-like fire.
Remember this Mad Crate. Those screws are like rocking horse manure. You COULD make some more but if th taper is wrong, they won't mechanically lock as they should. So, If it ain't broke, then don't fix it