I just received a Dillon 550 frame to upgrade my old 450. In order to do so, you have to remove the link pins and they give you a cut off nail(!) to do the job.
Yeah - right ..... The nail bent quickly because you really have to pound on it, and nothing budged. I believe that they must have been pressed in at the factory and that it might be necessary to press them out.
Anybody been there - done that?