Well, I might try the gun scrubber. I still use a bronze brush on my shotguns, and slugguns, and pistols. I can't get out that plastic fouling out of my muzzleloaders and slugguns without a bronze brush. Might save me from buying new ones. You probably right, it makes probably no difference, but after seeing borescoping of before and after with a lilja barrel with a brush, I decided to stay away from unless I have too.