@magnum0710 I own two .22 caliber gallery guns, a Winchester model 1890, mfg 1911, and a Winchester 1906 (with mixed serial numbers) mfg 1913 /1926.Both are fair condition, neither has much bluing left, so anything I do is a preservation not a restoration.
I'm going to get some Copper Wool, and
I've got a buddy who is a machinist with access to Oxygen Free Copper. Supposedly I can make tools from that material that will allow me to "rub" off the light rust and not effect the bluing.
Realisticly, one would likely be doing a complete strip job along with a bore sleeve. The rust on the other one might clean up if I don't go through what's left of the factory bluing.
But if I'm going to get the materials and build the setup for one to be rust blued, I might as well do both.
So now you know why I want to know how to clean up the rust, or strip the bluing entirely, inside and out.