Always clean from the breach end when possible. (1) Soak the bore with Weapon Shield. (2) Allow to sit for 5 minutes and repeat process. (3) Swab back and forth to remove most of fouling inspect the bore and repeat if necessary. (4) Use a nylon bore brush to remove stubborn fouling. (5) When finished, dry patch the excess solvent from the bore and finish cleaning and coating the gun with Weapon Shield CLP.