Isn't carbon harder than steel? Ill clean rifle brass, so the expander isn't getting pulled over all the grit. I lightly lubricate the inside of a rifle case neck after cleaned. Pistol brass gets belled, then crimped from the outside so I usually don't clean pistol brass, unless is really dirty from laying around on the range.
My usual approach is to offer my opinion and leave, but what the heck.
Graphite is a popular neck lube. What's it composed of? Carbon!
I know that several stages of a through cleaning of their brass is for some people part of their "religion of reloading". Facts, other people's experiences and approaches, really anything that differs from the particular dogma of their beliefs is unwelcome. That's ok. It's your time, and your equipment and you need to stay in your comfort zone.
In the words of the famous philosopher Forrest Gump: "and that's all I have to say on the subject".


















































