I'll give you another hint: Pick up two more brushes, one .45cal, and a .22 cal. The .45 to scrub the chamber and the large part of the gas tube, and the .22 to get into the narrow part of the gas tube.
The chamber has to be spotless after using any corrosive surplus ammo. I usually put the .45 brush on the end of one small rod section and give it a dozen spins with my cordless drill.
I see what your saying, my chamber appears to be clean after soaking it in Windex and washing it with boiling water, possibly because I only put 15 round through it.
The patches actually seemed like a bit of a loose fit. By no means tight.
Couple Q's now
1. I ended up running the bore brush through it, from the end of the barrel. When i get it all the way in, pulling it back out seemed hard, like it had to force the brushes the other way. I had heard that this was bad.
Should I get a actual cleaning rod (longer) so that it goes all the way into the chamber, then pull it back out?
2. I remember everyone talking about boiling water. So that's what I used.
Ends up some of it ran on the one side of the stock, and turned some of the finish kinda white.
With the use of the cleaning solvent I was able to get rid of the ugly white, but a couple small spots are now missing the finish.
Future I will use warm water, not boiling.
But is there anything I can do to try to seal back up the missing finish?