Me too...I'm up to 3k-4k now...no problem with other folks keeping your brass at matches either. Don't need to change over the progressive press for different sized primers eitherI love small primer 45acp.
No one wants them, sometimes I get them for free, when buying it 1x fired (allegedly) is 10% to 30% cheaper than large primer and it's usually available.
Had another shooter who bought 500 once fired .45ACP cases. Almost 50% were SPP. He gave them to me and only asked that I keep him in mind if I picked up LPP cases