For the bolt lug recess I use a tool I got from Sinclairs.
It's the lower of the 3 shown on this page .
You have little felts you screw in but I have to cut them smaller to fit into my 3 lug action. It's obviously designed for a two lug bolt.
It's tight in my bolt race and an awkward thing to use. I couldn't really recommend it.
For my smaller action I use a small wire bottle brush (plastic bristles) with a 4x2 patch would over it. This oils dries and cleans the chamber and I bend the tip at right angles to clean the lug recesses.
Again, a rough and ready way to do it. There could easily be a good tool but I haven't seen it yet.
Bookmarks