I took my new rifle to the range today and shot ten loads getting to zero. When I got home about three hours later I first used a fouling scraper, then a bronze brush, next about twenty cloth patches soaked with Ballistol. The breech is quite clean and reflects light from a flashlight well enough that I can see the bore is as clean as new. Ballistol is a mixture of water and mineral oil and a couple of other chemicals.
Shooting patches were lubed with 50/50 dish detergent and water.