Just thought I would post this for anyone else who gets frustrated with .45 ACP and SPPs. After crushing a few LPPs into SPP cases, I figured out how to make the press check primer size for me. This works on a loadmaster for sure, but I dont know about other types of presses. With loadmaster, put a decapping die in your first station, and adjust your primer seater so that it would be seating primers too deep. I use the method of using the size die to control how deep I set my primers, so I don't have to change the setting when switching calibers. This has the added benefit of trying to seat primers too deep without a size die. The brass gets deprimed first station, then at the 2nd station, if it is a LPP piece, the primer seating rod can fit inside the primer cavity. If it is a SPP piece, the primer seating rod will be stopped by the brass, and will cause a noticeably shorter stroke in the press, feeling like it is binding. The beauty of this, is it is an easy, mindless, repeatable, foolproof way to make sure you get all your SPP brass separated out. You can crank along quite quickly too if you have a case collator. I'd guess I did about 500 brass in 40 minutes. Hope this helps someone else out!