I smoked another prime brisket. This one was 14.74 pounds before the trim. I wet aged this one for about a month. I placed the brisket fat side up in the Big Joe at 11 am this morning when the smoker temperature was around 180 F and climbing. It settled at 250 F after about 30-40 minutes. And it cooked at 250-275 F the rest of the way until completion. I didn't wrap the brisket and the entire cook took only 5 hours and 15 minutes.

The brisket internal temperature hit 203 F on my wireless Maverick at 5 hours 15 minutes mark and when I doubled checked with my Thermapen, it confirmed the temp and brisket was probe tender pretty much everywhere and the probe was sliding in like butter. And when I slapped the brisket and picked it up, it jiggled like jello telling me it was done. So I removed it from the smoker and brought into the house. I wrapped it in foil and towels and placed it in the empty ice cooler where it's currently resting.
5 hours and 15 minutes is pretty fast cook time for brisket when my smoking temp was only 250-275 F. And I didn't wrap the brisket. So when I read about other people smoking brisket for 10-14 hours even after wrapping, I'm wondering what I'm doing differently. These people are smoking at around 225-250 F. Does 25 degrees F make that big of a difference in cooking time?