Yes, I kept the low-odor stuff for cleaning the bolt, etc. I'd been using it on the bore since day one, including letting it soak for up to an hour. When accuracy fell off, I started with #9, and finished with Hoppes Copper Remover to remove huge amounts of blue/green. Patched it until clean. The time it took and the amount of carbon and copper that was removed was impressive. I suppose the real take home message is that my Mod10 factory barrel has to be pretty clean to shoot well. Not to mention, I have to use a product that gets the job done.