I started the fire at 1 pm Wednesday. Temp came up quick. Started closing vents 245. They stopped at around 280, then sloly came down to 250-260. It was windy, and the sun was in and out, so I had to chase it for a while. It was well settled in at 245-250 when I went to bed at 10 pm. Woke up at 4 am Thursday and it was at 235. Gave the basket a shake and opened the side vents and she climbed back up to 260. Left for work at 6 am, and it was down to 250. The wife called me before she left for work at 7 am and she said the temp was 240. I wanted her to go shake the drum to knock down some more ash, but got the "I AINT TOUCHIN THAT" reply. When I got home at 4 pm, it was reading 150. There was nothing left but ash. Very happy with the burn time. I am sure it will improve and get even more effeciant over time as it gets more gunked up on the inside. My WSM sure did.