Originally Posted by DanVader
Must be different calculators, in beersmith this recipe is showing 40 IBU (tinseth) switched to rager and it was showing 49.5.
Yeah, I tried this in Beer Tools Pro and I get 47.5 (Rager, I think). Of course, this all depends on the actual AA of the hops, which the OP didn't provide.
Nevertheless, I think the recipe he laid out will indeed be closer to the 40's than the 30's, unless he's getting some oddly low AA examples of the hops. And the low 40's would be about right for that recipe IMO.