i have used it for 20 years in my 17.rem.it helps me go longer between cleaning.the gun still shoots .25 or smaller when it do my part.it cleans easy,i use one shot then follow with kroil let it soak then patch it out and do one more light coat and a patch for any excess. if you don't like it will come out fine just use kroil with your regular cleaner like butches etc.you could even tumble the bullets and get it off