Abin Sur
As WB stated, you may or may not
Sunday, December 22, 2019, 13:45

Need a shell holder extension. That is an answer for someone else. As for how to use a file trim die, run the die down until it hits the raised shellholder, then tighten an additional 1/4 turn or more until your press handle has resistance at the end of the stroke when raising the ram. This will take all the slack out of the press and linkage pins thus giving you a press fit for the shell holder against the file trim die.
File what case protrudes out of the die until it is flush with the top of the file trim die.
Remove case and deburr the I.D. and O.D.