Yes that's the same powder throw i use BUT that has all the stuff attached to it to run on the progressive. You can just mount that on powder throw stand and you have a handle you manually operate. It looks like it would be a pain to switch back and forth and if it were me i would just get another. If you look at my bench picture you can see mine on the right side bench between the dillon(blue machine) and the corner. Next to it you'll see a blue tray with 50 cases in it. Normally what most people do it just hold the whole tray under the throw, drop a charge and move to the next case until you get all 50 done. Then seat your bullets. The baffle is just a bent tin shield with holes that sits in the bottom of the powder hopper. it's purpose is to keep a constant weight(or lack of) on the powder. Without it you have more wight pushing down so when you set your load as the hopper empties it has less weight pushing down and your charges can lighten up.
The difference between a Socialist and a Communist is that the Socialist doesn't have all the guns yet