Works VERY good and you can spend lots of money on other ideas such as SS Steel Wool or Bronze Wool or one of the other softer metals. Do NOT use regular steel wool on a SS gun as this will leave small bits of the wool embedded in the metal and will increase the likely hood of rusting. SS bore brushes can be used on either type of barrel/cylinder because these brushes are made from a softer grade of SS than the guns are and also aren't put through any hardening or heat treating process so they are very soft.