About 10 years ago I bought a heavy barrel, hogue stock and target hammer for a 10-22 and started shooting benchrest. The guys helped me get started.
The bullets were dipped in jewelers rouge. 10 fired, then 10 normal, then 10 in turtle polishing compound, 10 normal, then 10 brasso and many normal (10 or so bricks) until accuracy dropped. The idea was to polish the bore with lighter grits. Did it work? I don't know. But it's had 50-75,000 rounds through it and I still win more than I loose. I do not clean often. Never had a brush down it, only patches.
1+ on the copper bullets above. For me only lead coated as well.
One tip I have when it settles in try
http://www.militec1.com/ . It gives you a longer duration between cleanings.
Blessings