I just picked up a tube of that Blue Wonder Gun Cleaner this weekend. Just to see how it worked, I took out my old .270 that I had shot and cleaned last weekend. Put this blue wonder on a new brass brush and ran it through the bore, waited 10 mins. like the directions said and then started to run patches through it.
I was amazed at the amount of junk that came out.
Just a caution though - be sure to get all the blue wnder out of the bore/action and apply a quality gun oil.