Royal Oak rocks...
Found this in a bag of RO lump the other day - a 5.3 oz rock. So far no foreign objects in the four bags of Cowboy I've used. I'm liking me some Cowboy (never thought I'd hear myself say that!).
LBGE, 22.5 WSM, 14.5 WSM, Backwoods Chubby, 26.75 OTG, Weber Performer, Ultra fast Packer green Thermapen, American flag Thermapen