I've done a bucket full of them over the years and I just use my universal de-priming die. I just move the ram very slowly and ease them out. With the universal de-priming die you can feel the resistance very easily and also note if the primer pocket is getting loose as you don't have the resistance of resizing the brass at the same time. It goes without saying that you should be extremely careful. I've never had one go off but that doesn't mean it can't happen. Eye protection is mandatory. A friend of mine uses the same setup but he places a small plastic bucket over the die and press when he removes live promers.