I was brewing a Harpoon IPA clone over the weekend and when I took my OG reading reading it was showing up at 1.050 instead of the 1.063 that my kit was predicting. At the time I figured I had somehow messed up my brewing since I am still new to this (this was my 4th batch) so I went ahead and pitched my and hoped for the best. Since then I realized that while I stirred my boil after adding about a gallon and a half of water I did not stir it well again after topping it off to the full five gallons which I assume caused a faulty reading.
So my question is is there a way to go back and verify what the OG would have been based on boil time, ingredients and how long the various ingredients were boiled?
If this is a stupid question I apologize but I'm still not sure what other than how much grains and extract are used affects the OG.
Thanks for any help you can give.