Originally Posted by FormulaQ
Arent most 2nd hydrometer readings taken after fermentation but before carbonation? If so, shouldnt the carbonation also produce slightly more alcohol in the beer? (meaning the marked ABV hadnt taken into that small amount of alcohol during the carbonation process, thus being slightly inaccurate).
Technically, you're right... but you're talking very little (to the point it's not worth measuring or recipe-factoring for most brewers).
The math, if you really care, comes out to somewhere between 0.3 and 0.4 percent if using exactly 5oz corn sugar in an exact 5 gallon batch. When I used to measure, at the end, my average was 0.32 percent increase because of bottle conditioning...... So... you're talking less than one third of one percent...... not worth the effort to measure anymore!