[Sky Zero]

Originally Posted by Olle

Given enough time, Kroil seems to loosen up most of the crud in old barrels. I wet the bore, let sit for a day or two, wet it again and go on like that for a week or two, then I start brushing. In bad cases it can take a few treatments to get it clean. I have also tried to plug the bore and fill it, but Kroil is so darn thin that is seems to find its way out anyway.

I might have already told you this in other threads, but I had an SVT-40 with a real rough bore a while ago. I had brushed it numerous time with bore cleaner (wearing out several brushes in the process) but it didn't get much better, so I figured it was a goner. I sprayed it with Kroil for protection, and put it away for a few weeks, then I sold it to a friend as a barrel change project. A few days later he send a video clip showing him shooting the "rusted out" rifle, and when I asked him how he cleaned the bore he said "the crud brushed right out and it shoots just fine now"

Would you say Kroil would be safe on the outside blueing? I need to get rust out from the hard to reach places in the internals