I just turned the top off of a big full length inexpensive die (won't use the expander ball) while waiting for new dies and am trying to decide how to make the neck of the die a little bit bigger. These are the options I can come up with.
1. 200, 320 grit emery paper like above.
2. Mandrel mounted sanding wheel.
3. Hone - like Sonnen machine.
5. Hone that looks a like bunch of pack goat turds attached to it.
Concerns are making the neck "true" with no run out.
Also Ill be expanding the neck in another step. If there is run out produced when making the die neck bigger could the expanding "correct" some of the "unintended" die run out?
I also know the expanding process can cause some run out of its own but I have had good success with this loading method.
Did you get all that? lol
Its like a giant full length custom bushing die with no bushing, the bushing can only get bigger and never be removed.
Any other suggestions and/or experience in this matter?