Efficiency seems wrong

[105WestBrewing]

We are a brewery and would like to migrate from Beersmith to this. I do not have confidence in the efficiency estimator. I put exact known recipes in and get a high OG by about 4 points. So I did a test. I set up the perfect mash tun with no loss and a simple recipe. 10 lbs German Pale, 5 gallon batch and 75% efficiency. If I run the math by hand and a potential extract of 1.038/lb of grain, I get 1.057 OG yet the software says 1.059. Here is the math
38 x 10 lbs x 75%= 285

285/5 gallons is 57 or 1.057

Anyone understand this?

 

[Ozarks Mountain Brewery]

are you using the defaults in general settings and Equipment profile looses? or have you put in the correct numbers and brewing efficiency

 

[105WestBrewing]

No, we put in the actual equipment settings. I even tried creating vastly different equipment to see if the OG changed. It did not. I really can not get past the math of it.

 

[LlewellynBrewHaus]

Pretty new here but what I found increases the accuracy was switching the batch destination to the kettle rather than the fermenter (based on info from an older post) now when I enter my known kettle boil off eff. My gravity came out dead on
Cheers