4.22 pound boston butt. at 1.5 hours/lb = ~6.3 hours at 2 hours/lb = ~8.4 hours Therefore, my guess is it should be done sometime between 2:00 PM and 4:30 PM. Temp around 225 degrees. I put it in this morning at 7:30 AM. By 9:45 the meat is at 140 degrees. Is this going too fast? Or am I good to go? Thanks On Edit: A few more details. This is being cooked in my 30" MES. I started the smoker with about 5 briquettes of charcoal in the chip basket (I find this helps keep temperature stable), and have been adding 1 briquette each hour. Adding hickory wood chips about every 30-40 minutes.