My last All Grain batch only yielded 65% efficiency.
When i mashed in, my temp was definatley high (at 160) for about 10-12 minutes. I stirred and added ice until I could get it down to 153. Im using a 10 gallon cooler (MLT) and it held 153 for the entire hour. I mashed out with about 8 quarts of boiling water, then sparge with about 3.5 gallons at 185. I also put a TBSP of ph Buffer 5.2 in the mash, and stirred alot. I dont think its a bad grain crush because my LHBS is also Ballast Point, and they were going to be crushing their grains later that night for their commercial beer.
Should I just accept 65% as my efficiency?