Actually, it is funky. I am using the Tinseth formula. The formula makes a difference.

The way Beersmith calculates estimated IBU is different than promash. BS 1.4 is different than BS2.

I found that entering the extract first then adding the hops gave me a different number than entering the hops first then entering the extract. Notice my efficiency. That comes from the wierd boil times.

On my system , I get these numbers. I am pretty sure BYO is using Tinseth

BeerSmith 2 Recipe Printout -

http://www.beersmith.comRecipe: dead guy clone

Brewer: Jomebrew

Asst Brewer:

Style: American Amber Ale

TYPE: All Grain

Taste: (30.0)

Recipe Specifications

--------------------------

Boil Size: 6.55 gal

Post Boil Volume: 5.72 gal

Batch Size (fermenter): 5.00 gal

Bottling Volume: 5.00 gal

Estimated OG: 1.067 SG

Estimated Color: 10.2 SRM

**Gaertz: Estimated IBU: 30.4 IBUs****Rager: Estimated IBU: 48.8 IBUs****Tinseth: Estimated IBU: 36.5 IBUs**Brewhouse Efficiency: 72.00 %

Est Mash Efficiency: 150.3 %

Boil Time: 60 Minutes

Ingredients:

------------

`Amt Name Type # %/IBU `

1 lbs 4.0 oz Carastan (30.0 SRM) Grain 1 13.4 %

2 lbs 4.0 oz Extra Light Dry Extract (3.0 SRM) Dry Extract 2 24.2 %

2 lbs 8.0 oz Munich Liquid Malt (8.0 SRM) Extract 3 26.9 %

1.500 oz Perle [7.50 %] - Boil 60.0 min Hop 4 36.5 IBUs

3 lbs 4.8 oz Pale Liquid Extract [Boil for 15 min](8. Extract 5 35.5 %

1.000 oz Saaz [4.00 %] - Boil 0.0 min Hop 6 0.0 IBUs - Joe