I have the sneaking suspicion that I'm sanding my inner barrel to bits...either via shooting dirty BBs down it, or after as I'm cleaning it out.
I don't want to buy more inner barrels...but I don't mind that cost either. It's just the eventual jamming up that's frustrating me.
I'll take a little brush with me next time and tie/stash it with my kit...that's a good idea.
Tys