The potential extract of rye malt is listed at 1.029, and I was aware of that going into this. BeerSmith takes care of that, but I'm getting some OG results that I don't understand:
Rye Brew % Rye Calc OG Actual OG
13 35.0% 1.052 1.059
12 28.6% 1.055 1.058
11 28.6% 1.055 1.055
10 28.6% 1.055 1.062
9 26.2% 1.055 1.060
My all malted barley brews are spot on, and rye 11 is spot on, but the others are high. And Rye 10 is crazy high!
All gravities were taken with Plato Saccharometers (which are pretty damn accurate) and temperature corrected. Usually I take three or four readings as the temperature rises, and they all agree. So I'm getting crazy efficiency on some (but not all) of these rye brews!
The OG samples are taken using the wort that remains in my Thermonator after the brew is chilled which is usually around 200ml. So I'm pretty sure that sampling error is not the issue. My balance is calibrated, and I'm pretty good at taking measurements, so that's not the issue either.