I inherited some 556 brass from my grandpa and they're head stamped Lake City from the 1970s. I believe they are all once fired and that he never processed them in any way. I ran them through my Lee universal decapping die and RCBS press and no extra effort was needed on the handle. My question is, should I still run them through my primer pocket swage tool or just start priming them. If the primers came out easy, wouldn't new ones go in easy?