*******, I use the swager unit you posted about. I have it set up in a separate older single stage press that is dedicated to swaging. I've done thousands of .223 and .308 with it. Its relatively easy once its set correctly. This unit is the same die thread as all other std dies so it should fit. I have bent the rod a few time in it though due to finicky cases of different makes. Just pounded it back out flat with a hammer. I don't have a progressive press so I'm not sure if it would work in one.
But, no, don't throw out brass due to mil crimps. Keep it all! And even in a desperate situation even berdan primed cases can be reloaded with some extra work.
But, no, don't throw out brass due to mil crimps. Keep it all! And even in a desperate situation even berdan primed cases can be reloaded with some extra work.