The Knights come from the factory with Dyna Tek bore coating to make cleaning easier. Regular bore solvent should be all you need for BH209. The JB may have scrubbed your coating out, leaving you with a bare bore; I don't know. Ask Mule Deer on the Gunwriters' forum. He's a big Dyna Tek guy.
JB is for removing copper fouling and is mildly abrasive. I wouldn't use it like you did myself.
Last edited by Pappy348; 08/29/15.
