A week ago I brewed up a BIAB batch of Oatmeal Stout. Missed estimated OG by 5-6 points (my fault; not enough water in the pot), went for a modified process with 60% of pre-boil water volume as mash water, the rest as an infusion sparge. OG was 1.043, shooting for 1.048-1.050. Not a HUGE goof...