In all of my cookers KBB definitely burns longer. I haven't done a scientific time comparison, but I know because I have to reload with lump on longer cooks. I don't reload with KBB.
Not sure what type of cooker you are using.
Shirley Fabrication Offset Awesome Pit
Backwoods G2 Party & G2 Chubby
Big Green Egg XL
Weber 18.5 Kettle
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