After 4 all-grain sessions under my belt, I'm still having issues getting my predicted water volumes out of the mash and into my kettle. Clearly user-error somewhere... On the pumpkin beer I did a couple of days ago, the water calcs gave me: 9.79 gal total, 7.41 strike vol, 2.41 sparge vol, -2.47 grain absorption, -.25 mash dead space to yield 7.08 gal into my kettle. Yet I had almost exactly 8 gallons! I may have put something like 7.5 into my mash (vs 7.41; my measuring cups aren't quite that accurate), but that can't possibly account for an extra gallon! Could the grain absorption number be that far off? Then of course with extra water, my pre-boil gravity was off so instead of a 60 minute boil to reach the expected 5.5 gallon-to-fermenter, I had to boil 2 1/2 hours to get to 1.082 (expected was 1.083). So while I think I'll have a beer that I expected when it's all said and done, I sure would like to dial in everything better to have a more repeatable process. thanks for any advice!