It's no more trouble to prep than any other military brass. Decap, swage the primer pocket, resize, reprime and load. You might want to be aware this Twin Cities brass is rather heavy, as was most military brass of the era which means less capacity and must be loaded accordingly. Current military brass can be some of the lightest and highest capacity available. This being said, your almost 40 year old brass is still serviceable but not not my first choice for brass.