I also have a CSA LW in 22LR.  I have a Dewey coated 20C 38" coated rod and a Dewey 17A thread-adapter to use with .22 nylon brushes.  I never use brass brushes unless serious cleaning is need.

I never have found a chamber guide ofany type for 1885s.  For centerfire I use a drilled-out cartridge case

For nearly all cleaning, a rod is not needed on a .22.   

I clean fairly often to remove fouling, but rarely solvent clean or brush unless accuracy drops off.

I clean using a piece of weed eater string.  Cut off an appropriate length.  Melt one end into a ball.  Use a sharp knife and cut a long diagonal cut off the other end, so that you end up with a sharp tapered point.  Poke that through a patch, slide it down to the balled up end, and pull it through the bore.  Clean, without a chance of damage.  You can wet solvent a patch, too, and then follow with a dry one.  Just can't do a tight patch, or it pulls over the melted end bead.  If you got really serious about this, you could experiment with finding a bead the right size with a hole in it that would go on the weedeater string, and then melt the end to it to hold it.  You could even turn a small cylinder on the lathe, and drill a hole in it to slide onto the string.  Then, find the exact patch size to work, and cut a bunch of them.  This would allow you to use an optimally tight patch without it pulling over the melted end.

I buy solid Delrin rod - drill & tap it 8-32 for a brass jag.

I was thinking about a Hoppe's bore snake, but it has the brass brush embedded. I think the weedeater line is a great idea.

I always thought it was more important to clean out the carbon ring in the chamber rather than the barrel.

I've used the weedeater string but lately use fishing line. Tie a loop in one end and pull a patch through.

With my .17 and .22 calibers I use the pull-through Patchworm setup.  Weed wacker string with felt buttons and cotton patches. 

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