I know this is discussed frequently but here's another.
I cooked 2 butts this weekend on my medium BGE. Loaded lump half way up on fire ring with RO (USA) and began cooking at 250 degrees. There weren't any real large pieces of lump. They cooked for approximately 12 hours and temp started to drop. No big deal, I put them in the oven and finished them in another 2 hours cook time.
Do you think that is a reasonable burn time or would another brand of lump made a difference? I suppose I could have also filled the lump to near the top of the fire ring and maybe got a couple more hours burn time. Thoughts or is this reasonable given a medium?
P.S. The butts turned out great as usual.