I wrote up results on Bore Tech Eliminator and Carbon Killer 2000 in the vendor area.

Both products work very well and vastly better than what I had been using (combo of Kroil and Hoppes)

While the Bore Tech Eliminator seemed about equal to low level copper, its non toxic, bio degradable and zero odor.

Carbon Killer 2000 (nice orange smell) picks up where Bore Tech leaves off for tough carbon problems, though Bore Tech has a good carbon cleaner as well.

Pretty much settled on using the Bore Tech for barrel break in cleaning and Carbon Killer for routine and an occasionally check with Bore Tech to see if any non detected copper is building up (it was in one barrel that seemed to be carbon only)