Thanks a bunch for your replies folks. Is there a different way I should be calculating this? I'm concerned that my calculations were so far off. Also for next time, if my wort has too low of an OG at the end of the boil, should I keep boiling until I reach my target volume/OG? Thanks again.
Went for a one gallon Russian Imperial Stout last night with a target OG of 1.097 and only got around 1.055...a rough look. Wondering if you wonderful more experienced people can help a guy out to see what I did wrong. Here's what I had for my recipe:
4.2lbs malt, 7.2 grams hops
This is what...