I had trouble with the RCBS universal on .32 caliber stuff, and then .45 AR when I started loading that. I bought the RCBS hand primer that uses shell holders back when I had issues with the .32 stuff, so I just had to track down a #13 for the .45 AR. I also had to buy the .45AR caliber conversion kit for my Dillon 550 and a #13 Lee x-press shell holder for my APP to decap the AR rounds. I’m all set now, but when I first got into the .45AR round, I didn’t research the fact that everything is practically proprietary for loading it.
I actually ended up buying a second 550 caliber conversion kit because I had misplaced the first one and couldn’t find it when I thought I finally had everything together to finally start loading it. So if you’re loading on a 550 and haven’t picked up the conversion kit yet, hit me up and we can work out a trade or something.