I got some old RCBS dies in 9mm (3 die set). They're pretty old with a little rust in spots. Tonight I have them soaking in some coca cola to get the rust off, tomorrow I'll clean them up. The sizing die does not appear to be carbide, that is I can not see another metal insert inside of the die. Can I size 9mm with this die without lube? If not, then is it good for anything? Worth keeping? Thanks Wanna kill these ads? We can help!