Rimfire cartridges foul barreled actions with carbon, lead and even wax from bullet coatings. That’s why Montana X-treme offers a solvent specifically formulated to remove such debris. As the official solvent supplier to the USA Shooting Team, Montana X-treme offers a competitive formula that stands up to the most stringent of task requirements. Simply wet a patch, brush and repeat until the level of desired cleanliness is reached. The company donates $1 to USA Shooting from each bottle sold. Price: $11. Contact: Western Powders, Inc. (406) 234-0422; montanaxtreme.com.