My wife and I sighted in her 20ga shotgun with slugs over the weekend. We used the standard Remington lead slug.

At home I had a devil of a time cleaaning the bore. I believe most of the mess was from the plastic sleeve around the slug melting on the inside of the barrel and some lead fouling.

I scrubed and scrubed with a brass 20ga bore bursh soaked in Hoppe's #9 but it still left some of the residue in the barrel.

What do you folks recomend removing this mess with?

Thanks!!