Pre boil gravity1.048 13 brix Og 1.062 16 brix Final gravity 1.012 6.6% abv
Based on boiling 8.00 gallonsliters at 1.048 for 60 minutes, this will decrease your wort by 1.00 gallonsliters, bringing your after boil OG to 1.054. You wanted an OG of 1.069. It looks like it will be under.