Hey T, you will find that initial temp climbs really fast on large cuts (butts and brisket), almost scary-fast sometimes! But, you will soon find out how quick it will stop climbing, once the meat hits the stall! Sometimes, the temp will even drop a few degrees, and you'll have to fight off that feeling of panic, thinking your smoker stopped heating! It will usually stall in the 170s range, but I've also seen it in the 160s and 180s. Resist the urge to rush it, as this is where the magic is happening! That internal fat is rendering and flowing outward, and the meat is tenderizing. Just keep your temp steady, and wait for it to start climbing again....it will!