Originally Posted by landhoney
Mine is still very bitter at almost a year old(maybe over a year). For my tastes, I would lower the IBU's next time. I like hoppy beers, but not really bitter hoppy beers. Its a great beer, but I think you'd be OK lower the IBU's a bit. I've never reserved wort to bottle, so I can't comment. Good luck.
Thanks for the feedback. That's what I was concerned about at 178 IBUs. I wonder if 144 is still going to be a little bit aggressive. Perhaps I will do all the columbus at 30 min. That would bring it down to about 135 and almost 1:1 OG:IBU.
The calculation I've found for carbonating with gyle (reserved boiled wort) is pretty simple. Divide the volume by the OG (dropping the 1 and multplying by 1000 first) and multiply by 3 to get the amount of wort needed. So at 1.131:
5 gallons / 131 = 0.038 * 3 = 0.114 gallons x 4 qt/gal = 0.458 qts of gyle. You can probably adjust the 3 multiplier depending on whether the style or your preference calls for a higher or lower volume of CO2. I'm thinking probably lower for this one, particularly considering I hope to age a lot of it for several years.