BE CAREFUL with primers! IF they are typical crimped-in military style primers, you can' t SAFELY decap the cases without killing them first! You also can' t easily deprime the cases if the primers are Berdan type. Water might or might not kill them. Oil will, but it is a mess to clean up afterward.

I don' t know what caused your duds, but if it is the primers, you' d have to replace the primers (pull acouple of them to see if the primers fired or not), before reloading the cases. If the primers work O.K., you could recharge the cases with a known powder and use to old bullets, if you want to.