Lol! I hope that kid doesn't believe the finish is intact below the surface...below rust that has attacked the SUBSTRATE. Sounds that way. If a gun is in that bad of shape, ain't no brush nor steel wool gonna fix it. Yea, a little band aid but is that what this thread is about or about removing minor rust? That ain't minor and a brush ain't a fix, regardless of material. Google can be your friend but there are also morons out there that have no clue nor common sense. The brass brush is good if all you wanna do is remove as much as possible from the pitting without plans to actually fix the gun. It'll help that but the pitting will actually be deeper than before. Not a bad thing because it's gotta go before you can truly fix it, either way.
Maybe what we need is two things. One is pics of the rust that needs addressed but just as importantly, what fix or hox fixed do you want the end product. That video is ok for simply stopping damage that has gone way too far for steel wool and is only fixable if all damage plus surrounding material is removed down to bare and bright steel. That's why re-bluing a gun like that is pretty expensive if done right. This is really just common sense but I do understand initial concern with steel wool. Bottom line is, the damage, at some level is there. The fix depends on the level of damage and steel wool will help tremendously with minor surface rust. But, not for that level of pitting, at all. My advice is start with the least abrasive method, which is still likely the 0000 steel wool. If that doesn't give you a desirable result, progress to more aggressive approaches but expect some amount of damage quickly, even with brass if that rust and debris become embedded into the bristles, which WILL happen.
If steel wool doesn't fix it, go see a smith and see what they say based on your budget and expectations...both big factors.
