How do you guys open up or enlarge a Lee bullet sizing die. I assume most of you don't have a Sunnen hone in your garage. I was thinking about a flex-hone in an electric drill with WD-40 or motor oil for lube. Has anyone tried it? Did you get a fairly straight hole?
from:
mcmaster.com flexible-hones
they have them as small as 4mm (0.055")