After two or three shoot/clean cycles, the DBC treated bore gets even easier to clean. I never use a brush following DBC, just soak with a good cleaner like Wipe Out.
I have premium barrels so treated that just about don't foul. I'll see some carbon residue, minimal to no copper fouling and that's thru the Hawkeye.
DBC is really good stuff.
I'm a believer, if you can't tell...
DF
