Originally Posted by 2ndwind
Thanks.... I have mostly been using foaming bore cleaners the past several years. I'm thinking a more aggressive copper solvent might be called for to be sure I get to bare steel.... Suggestions?

Depends on how bad it is. It can take a LOT of work to get a heavily fouled barrel clean down to the steel. And, a borescope really helps.

With a heavily fouled barrel, I'd do a series of soaks with Wipe Out or Patch Out, may even need the Accelerator, but IIRC, they don't recommend over night with that one. JB Paste may be needed. Lots of work, but it's gotta be really clean, not just no blue patches.

After treatment and a few shoot and clean cycles, cleaning seems to get easier.

As far as new barrels are concerned, mine all get it, even top end premium tubes.

Can't hurt, can only help. I have premium barrels that after extended range time, clean perfectly with a patch or two of Patch Out. And that's borescope clean with no fouling in sight. They won't all do that. Others may take a bit more effort, but are much easier to clean post treatment than before.

DF