2.5 hours into my Royal Oak USA Lump 10# burn test.
The RO is rolling along, holding temps excellently. It's even being reasonably forgiving about messing with loading food, flipping food, and taking a quick photo or two. I figure this makes it a fair test, if I were to load a 9# shoulder or whole pork leg I might get in one or two times over the 12 hours (one time to flip the meat, one time to shake/stir the coals).
So far the 10# bag of RO/full charcoal basket full is peforming just like any briquettes I've used in the past on the UDS. Upon my flipping of the turkey legs and chicken I can see clearly that the burn pile in the charcoal basket is still plenty full and looks to have many more hours left to go. I can even see unburned applewood chips in the picture here...
Popped the lid back on, 10 minutes later it locked right back to 230 degrees, didn't have any flare up or temperature spikes.
Yes, the white flecks in the photo are snow!