I'd like to try resizing some .243 to .260.
My dies are redding and unfortunately the expander ball is not tapered and has a knurled grip on it that chews the .243 necks.
Some of the US recommend using a Lee Collet die for the job - does anybody know if these have a tapered mandrel in them?
P.S. I don't have this issue with .308 down to .260 - I made up a dummy round and it chambers but is tight. Not due to length but to neck thickness.
Is this safe to use?
I don't have a neck turning kit and they are a £100. all I want is to try some different brass...