I only have a few years of reloading experience, (308) and am getting into .45 auto reloads now. Using a single stage (co-ax) - and some hornady dies. resizing / expanding/ seating all seem to go well, but i can't get a proper crimp - I've watched a few videos and read and reread the instructions, - sometimes it works and sometimes it docent, My jar of bullets to pull keeps getting bigger. anybody else have problems with seater / crimper coho dies? I'm just about to order a redding taper crimp die and call it a 4 stage process . from what I've dug up sounds like a reasonable approach.