Very high gravity reading!!

[pharmarchist00]

Today, I brewed a version of the Moose Drool clone that is posted in the brown ale section. It was a 3.5-4 gal. batch, so basically half of the recipe that is posted. It included 4.5 lb. 2-row pale ale, 0.5 lb. UK light caramel, 0.375 lb. carapils, 0.375 lb. dingemans belgian biscuit, and 0.16 lb. UK chocolate for a total of 5.9 lb. of grains. I calculated the 100% pre-boil conversion gravity reading to only be about 1.036, but I ended up with a gravity of about 1.068 pre-boil. Does anyone have any thoughts on how I ended up with a conversion efficiency of >100%? I'm not sure if I just calculated it wrong, or I am missing something else that effects that pre-boil gravity. Any suggestions would be appreciated, thanks.

 

[mredge73]

Something is off, the program I use calculated a post boil of 1.046 for 3.5 gallons; pre-boil at 4 gallons is about 1.04
The only thing that I can think of is that you have a bad hydrometer or a bad scale.

 

[pdxal]

^Or, bad measurements of volume.