I kegged my first all grain yesterday and would appreciate it if someone could help me calculate my efficiency. I brewed EdWort's Haus Pale Ale exactly per his recipe (8# 2-row, 2# Vienna, 0.5# Crystal 10). OG / FG per the recipe is 1.051 / 1.011.
I was shooting for 6.5 gallons in the kettle but wound up with only 6.25 gallons. My PRE-boil OG was 1.053 (adjusted). I brewed outside and wound up boiling off 1.5 gallons and got 4.75 gallons in the fermenter (I dumped the entire contents of my kettle into the fermenter). My adjusted POST-boil OG was 1.062.
I don't have BeerSmith (yet) and I'm unclear how to calculate efficiency by hand. Could someone help me out?
Also, I used a crappy thermometer (Thermapen in the mail!) so my mash temp may have been off. I fermented with Notty and measured my FG at 1.010. If I am calculating this correctly, that is an 83% apparent attenuation, which leads me to believe I mashed on the low side of the range.
Does any of this make sense?