bsteve-Hot water and soap will clean powder fouling ok.If you are shooting 777 or BM-3,plain old water will work.I use Cayugads formula to do normal cleaning.(50% winshield washer fluid-50% alcohol) followed up with a patch of Rem oil.If you shoot enough sabots,you will pick up plastic fouling on any imperfections in your bore,and have to use a solvent to remove.I use Benchrest copper and plastic solvent every now and again.I have a Rem 700-ML that got so fouled,it shot 9" groups.Took a lot of cleaning to bring it back.

Charlie