So I just finished up my Russian Imp. Stout. I usually get about 68% efficiency on my 1.060 OG beers (I use Northern Brewer’s mill) and I planned on losing quite a bit of eff. with this bigger beer. However, I lost a LOT more eff. than I planned. I was hoping to be in the 1.110 range at 63% eff. (what I was shooting for). My OG ended up being 1.088 which is about 51% eff.
Do you think that this eff. loss is typical and I just overestimated my expected eff. or do you think there’s something else at work? I know the setting on Northern Brewer’s grain mill is.040 so I know that’s at least part of the problem.