FWIW, I used a stainless brush in an 1100 target barrel and a 686 Beretta for several years just to see what would happen .. nothing. This was manual use on a rod and it was not a tornado type brush though those are stainless as well. The stainless brush I used was a conventionally constructed radial wired bristle brush.
I have seen light longitudinal scoring in bbl's forward of the forcing cones, but think it was likely caused by shooting early steel loads where the shot cut through the inadequate wad material first in use, rather than any stainless brush thing. Powered stainless brushes may be a dif horse, I don't know. I do know that a lot of people use them on portable power drills for carrier bbls. and 12 ga. bbls that use tubes. I have yet to personally hear anyone complain about scoring their bbls. from such use.
I use bronze brushes and Tornado brushes at present for bore cleaning, when necessary. A 'Tico tool' usually is sufficient when preceeded by a piece of paper towel wet w/Ed's Red or a good solvent. For chambers I use appropriate ga. sized [edit: bronze] chamber brushes except in the 12 where I use either a 10 ga. bronze brush on a rod or a 25mm cannon bronze brush mounted on a wooden handle.
edit: I would be hesitant to go sticking a stainless steel brush in a highly polished mirror bore, expensive double or any FN super or other older gun that had a mirror bore, why risk it?
Last edited by tw; 01/13/08 01:36 PM.
