I have serious doubts that a bronze brush will a barrel enough to affect the accuracy, if scratch it at all.:?http://schuemann.com/LinkClick.aspx?...bid=67&mid=445
Even the brass/bronze brushes, which have bristles which are as hard as mild steel, or the lead removers, which use a hard brass mesh to scape the lead from the bore, may well be able to scatch the bore surface of a stainless steel barrel. Any scratching of the bore surface will naturally lead to increased bore surface wear, leading, and coppering. My recommendation would be to never use any kind of a bore brush to clean a 416 stainless steel pistol barrel, especially if it has been exposed to strings of rapid fire.My Personal Practice has become to never clean the bore of my barrels. I do use a brass rod to scrape the deposits out of the chamber. But, I've learned to leave the bore alone and it very slowly becomes shinier and cleaner all by itself. Years ago I occasionally scrubbed the bore with a brass bore brush. But, doing so always seemed to cause the bore to revert to a dirtier look with more shooting, so I eventually stopped ever putting anything down the bore except bullets...
So what do you all think? What are your practices?