I used to be a bore butter person but after some real bad experiences using it, I switched methods real fast. I now use bore butter as a conical lube and nothing else. I am testing one barrel using only bore butter and Roundball's recommended method of barrel treatment with bore butter to see if it will mess up onme. So far the rifle is behaving perfect, no rust, but I really have not seen a benefit in accuracy or loading compared to my other rifles.. I now protect my barrels with a quality gun oil....