If you don't record those numbers and re-input them back into beersmith, your measured efficiency is going to be totally wrong. Measured efficency is what Beersmith calculates based on you entering your measured OG and volume into the fermenter. Above that and I estimate 70% efficency, unless it's a really big beer (> 1.090), in which case I estimate 65%. Who cares if you have to put an extra lb or two of base malt in your recipe to get the OG where you want it, as long as you know to do that? With the equipment at the brewhouse, I can usually count on an efficiency of around 75% for beers up to around 1.060. Remember, the goal is consistency, not necessarily high efficiency (unless low efficency is an indicator of something wrong with your process). If you routinely get 60% efficiency, and you enter 60 in the 'Tot Efficiency' field in the recipe design screen, that will help you to hit your numbers more accurately. That's how beersmith calculates the numbers it gives you. You need to enter the estimated efficiency for your system. I'm always happy to help walk you through, and I can email you the profile I use for lucas's tun and your pot if we're not going to be at the brewhouse at the same time in the near future. That's a vigorous boil, but you can actually boil off slightly more if you really get a crazy boil going.

I make sure that I've collected enough pre-boil volume before I start my boil, and I use about 1.2 gallons/hour boil off rate for your pot on a blichmann burner. 3 for chiller/trub losses to the counterflow. 3 gallons as the MLT deadspace for Lucas's tun, and another.

Use the same equipment every time if you can. Figure out (as precisely as you can) how much you're collecting and how much you're leaving behind. I found that I started hitting (or getting close to) my numbers when I began keeping closer track of my volumes. There's no question that it takes some tweaking for every single recipe that's probably my biggest annoyance with brewsmith. I get great results with beersmith, and consistently am within 5 or so percent of my numbers.

Beersmith equipment profile