Thread: Resizing brass vertical marks on neck

Have just tried it without the expander in it at all and it's actually worse than with it in.

When pulling the brass back its not tight at all, just normal as such.

Not a bushing die, just a standard Sizing die

Dies are clean and have a mirror finish as such, no marks on them.
Brass was new, but have tried on once fired PMC brass and is occurring on that aswell