I have been reloading both .45 ACP and .45 Auto Rim on a Dillon 550 for many years. I use a taper crimp die. After I run a bunch of .45 ACP. I just switch shell plates and run all of my Auto Rim brass. I have used both 230gr. cast LRN and 200gr. cast SWCs. I have never had any trouble in either a S&W 25-2 or 625