Ya know, I haven't cut open a shotgun shell since I was old enough to know better, but seem to remember a lot of what looked like cardboard in head of the thing, which would kinda rule out washing. Cut one open, see whats in it. I know that the "Active" (sp) hulls are one piece plastic, washing should be no problem. Cant see why tumbleing should cause any problem. 'Course, my being "frugal with my time"
if they are dirty or muddy, I wipe'em off on my pant leg before I stick'em in the size die :grin: