I only wanted to do one case to check it would fit the new powder measure and couldn't be AR ssed to get the lube pad and tube out.
I was very careful to do it bit by bit...
But eventually it got seriously stuck.
The result was some time spent dismantling completely, cleaning, polishing the die and eventually putting it in the lathe and drilling the case out bit by bit... and scoring the inside of the die in the process.
New die I guess -£30

D