Jeff, there is a post in the Brethren Sales section here by Ultramag regarding his first cook using Wicked Good charcoal. He said he used it in his WSM and got a 24hr burn at 229 degrees. These are his words not mine. I love the stuff and that is the reason I became a distributor of Wicked Good. If you are looking for a longer burn without the ash you might want to give it a try.
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Randy
R Butts R Smokin BBQ
BWS Gator
Lang Mobile 60
Lang Tandem 84 Catering Kitchen