here maybe this will help:

http://www.gameandfishmag.com/hunting/guns-shooting/gf_aa116902a/

I also forgot to mention that when cleaning anything with a rifled bore like a rifle or 22 or pistol be sure you use a graphite cleaning rod or a rod of some other material. If you use a steel rod or another abrasive material you can damage your gun's crown which can cause accuracy problems in the future.

Also, I reccomend staying away from the "bore snakes". I hunt and shoot professionally and the snakes are great for in the field but they are no substitute for a real cleaning as they tend to leave big chunks of powder and other fouling in the bore, especially in shotguns.