Bore Butter

Ive learned one thing. If you use bore butter, clean the crap out of the gun barrel before first fire. Get all the bore butter out. Cause youll be pushing peanut butter powder out when cleaning after your shots.

Yeah, it really doesn't take very much. When cleaning, I use it once everythings clean as a rust preventative more than anything. A couple LIGHTLY coated patches down the barrel followed by a dry one to clean things up a bit and that's it. Keeps the barrel shiny, makes loading easier, and the scented kind tricks deer into believing the gun is a pine tree....not sure about the last part though! LOL

I don't think you'd gain anything but maybe peace of mind out of using it in a modern shotgun. It might make cleanup easier but I doubt leading should be that big of an issue.

Have you experienced problems with leading of your barrel in this case already?

Rifled slugs in a rifled barrel is a NO-NO