I have a Lee perfect powder measure and beam scale which came with the breech lock challenger kit. I am loading for 357 and 9mm and have 3 powders - HP38, Power Pistol, and 2400. Bullet weights are almost entirely 125/.355 and 158/.357. With this combo, what would be a good way to approach powder handling? Emptying and filling the hopper, running charges through to circulate new powder, adjusting the micrometer and adjusting and measuring with the scale each time before filling the first case slows things down, and I don't know about the durability of the plastic threads over time. Should I get more PPPs, or a pro auto disk, or something else?