In a 6-gallon batch, about three years ago, I experimented with 30lbs of premium fireweed honey. It came out super-dry - HUGE pucker-factor. Yet the alcohol content was less than 10%, as figured from first and last of my four hygrometer readings (pitch, rack, age, bottle). Yield was thirty-three 750ml bottles, so that much honey didn't just settle out and get racked off.
Theories?