Third BIAB session today. Went fairly well. I am not quite hitting my target OG's though. I've noticed over the past three I am short about .004 or so off. I am doing true full Volume BIAB. Starting off with about 8-9 gallons depending on grain bill. I am also adding about a 1lbs to my recipes to make sure I've got little more sugar. Still off. Today I measured my pre-boil SG and it came in at 1.058 with a OG going in fermenter at 1.070 which was about 5.5 gallons after 60 mins boil. Target OG was 1.074. I had 13.5 lbs of pale malt 2 row. I also whirlpool with a immersion chiller in a 16 Gallon kettle. Mash was 152-155 for 75 mins and mashed out at 170 for 10 mins. I also did squeeze the bag while hanging over kettle. Long winded but what heck am i doing wrong. Sparge? Thanks for any one throwing out their thoughts.
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