I don't know if it's late and I am not seeing straight, but one of the National Homebrew Competition recipes seems to be way off in IBU's. It's the Category 10 recipe on page 53, the American Ale. It lists 19 IBU's but I am getting 73.2 in Beersmith!
The recipe lists:
1.2 oz Horizon at 13% for 60
1.09 oz Cascade at 6% for 10
1.09 oz Centennial at 9% for 10
1.09 oz Cascade whole hops at 6% at knockout
1.09 oz Centennial at 9% at knockout.
I'm getting over 40 IBU's just for the Horizon hops alone. Can someone run the numbers and tell me if it's me, or if there is a typo somewhere in the hop additions in the magazine.