If you're testing new powder or bullets on a progressive press, do you empty everything afterward? Or do you leave the powder and primers in the press ready to go? I'm concerned about kids' safety. The powder isn't going anywhere without a case being present, but I am worried about the primer tube. After I sent the last piece of brass through, I removed the primer which was sitting in the cup, and wondered how you guys handle a partial run. That was one of the reasons I picked up the Hornady SS recently. I can break everything down pretty quickly, and leave the press in a relatively harmless state. Previously, I'd run the 550 similar to a turret press, just sending one case through to get a few loads out. I've got a bunch of different powders, and I don't want to load out 100 at a time, only to find out that I don't like that load. So, I'd run 10 through, then adjust the powder charge, then run some more through. Are there any tips/tricks/methods for breaking down a powder and primer setup in mid-flight? I'm looking to load out some other calibers with the same powder, but will be switching from LPP (.45 ACP) to SPP (.45 GAP and 9X19.) Still learning how to do this correctly and safely, and appreciate the information here on the forum. Thanks in advance! Wanna kill these ads? We can help!