I would be interested in reading more about the correct method and tools to properly open chokes. I'll never do it myself, but would like to learn more about the methodology.
The above comments about a lathe are interesting, but I don't understand the purpose, nor can I easily visualize. Any photo's?
Also, how does an adjustable reamer function?
Are chokes reamed from the muzzle, or from the chamber to provide more support?
How does the operator know he is not altering the point of impact? Or does he?
Any explanation will be appreciated...