I am a complete newbie when it comes to reloading. In fact, I still haven't loaded my first cartridge yet. I am still slowly accumulating all of the components.
I recently acquired this set of .223 dies from a family friend who passed. My question is: What is the part furthest to the right in the picture? It will fit into the sizing die if I take the de-priming pin out....is there another function that I should be using this piece for?