I posted this on the shotgun page as well but this one gets more traffic and alot of you guys have an accessory rifled slug barrell so hopefully you can help. What is the best way to clean/polish a new 20 ga. USH barrell? I just got one and also a .450 and I need to clean and sight them in. Should I use JB on the slug gun just like all the other handi barrels or is there a better way? Or should I just run some solvent soaked patches down it and shoot it without poslising it? I will be shooting sabotted slugs so I do not really know if the barrell needs polished or not. Thanks for any input. Andrew