Re: Have you ever had a bad barrel?
The reason you are getting the soot on the casing is because there is a slight amount of pressure/powder in the barrel when the case is starting to be extracted. Get your self an adjustable gas block and tune it down a hair. Adjustable gas blocks allow you to tailor your rifle to your ammo and make a rifle cycle perfectly. I bet the cases come out piping hot too.
Nothing really wrong with it its just a little over gassed.
Most of the good barrel makers are doing it by hand and they make mistakes too. What are your symptoms?
I bet none of you have a .234 (6mm rem necked to .234)