I have been struggling for years to get my Benelli Super Black Eagle II to stop jamming when shooting sporting clays with low brass loads. I tried one more time to clean it like I always have, spotless. Then I went over it with Bio-Kleen's Gun Kleen. I put a very light coating on all of the moving parts, then wiped them dry. To my surprise, the gun has had hundreds of rounds through it without a single jam! I couldn't get through a single course without multiple jams for years. I highly recommend this!