This is a very timely thread for me, as I spent several hours of my time last night reading on this subject.

Like others, I've used Hoppes No. 9, Sweets, KG-12, Wipe-Out, Ad Nauseam and am currently using Bore Tech products for the removal of powder, carbon and copper fouling.

I have a question about KG-12 since it etches copper; yes I know copper is softer than barrel steel, but I have read that solvents that etch copper will also etch barrel steel over time. Can anyone provide feedback on that?

24HCF in its entirety, is solely responsible for why my children do not have college funds, my mortgage isn't paid-off and why I will never retire early enough to enjoy the remainder of my life.