For member who Do not know what "Galling" is . It is the deposit of Metal adhering to another metal by way of rubbing or sliding. The question is how to removed Brass material from the inside of Sizing Dies or Forming dies.
I have Noticed After forming , there is sometimes a tiny amount brass deposit on the inside of dies. It builds up and will form scratches. sometimes it is Unseen but it will build up.
It is Not like lead build up In bores