[David]

Up until today my brewhouse efficiency has been fairly consistent at about 64-66%. Today I tried a new recipe utilizing that information. Brewing software calculated this recipe as coming in at an original gravity at 1.057. Gravity reading at pre boil was 1.070. I cannot explain this, as I have not changed anything in my process. I will be using Wyeast 2112 California Lager for the yeast which says the top end original gravity should be 1.060. As I was expecting a gravity at 1.057 I did not make a starter. Will this yeast still work? Perhaps taking a bit longer in fermentation?

[sn00ky]

Perhaps consider pulling out and replacing volume with water before the boil ? Then save the wort you pulled for starter next time

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[SonnyK]

How far along in the process are you?  Are you done boiling?  Did you Pitch?

[David]

Have not yet pitched, cooling right noe

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[sn00ky]

Have you finished the boil ? If so, what was the post boil gravity? If you haven't finished the boil, can you boil longer ? What is your target pre boil gravity supposed to be ?

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[David]

Cooling right now will take a reading here shortly. Estimated pre boil gravity was 1.048

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[SonnyK]

Cooling right now will take a reading here shortly. Estimated pre boil gravity was 1.048

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Once you're done cooling and transferring to the Fermenter.. I would double check how much yeast is needed.  Either on MrMalty.com or BrewersFriend.  If you're going to end up under pitching with a single pack (sounds like you're making a lager based on your yeast), I would go grab another pack.  Last thing you want to do is under pitch a beer that'll sit in the Fermenter for 4-6 weeks and end up disappointed..

[David]

OG came out to be 1.065, may have misread my hydrometer at pre boil. Or perhaps I need to replace it. Still a bit higher than the expected 1.057.

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[sn00ky]

+1 on the underpitching.  Throw another pack in with it just to be sure you get the best out of it.  Let us know how it fairs out!

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[Lazy Ant Brewing]

I seem to have a problem with pre-boil gravity readings with a hydrometer.  I think it's hard to get a well-mixed sample, and my readings often tend to come out lower than anticipated. 

On one batch, I reacted to the lower-than-expected mash gravity reading, added some DME and ended up with a higher FG and higher estimated ABV than I had planned on. 

On the next batch I also got a lower mash gravity reading, but ignored it by making no additions to boost gravity and my FG reading came out spot-on to my original calculations in excel.

As long as my FG readings match by original calculations, I plan to ignore mash gravity.

[Visor]

I seem to have a problem with pre-boil gravity readings with a hydrometer.  I think it's hard to get a well-mixed sample, and my readings often tend to come out lower than anticipated. 

On one batch, I reacted to the lower-than-expected mash gravity reading, added some DME and ended up with a higher FG and higher estimated ABV than I had planned on. 

On the next batch I also got a lower mash gravity reading, but ignored it by making no additions to boost gravity and my FG reading came out spot-on to my original calculations in excel.
   As long as my FG readings match by original calculations, I plan to ignore mash gravity.

   Are you pulling your gravity sample from the mash tun, or from the BK?

[David]

I seem to have a problem with pre-boil gravity readings with a hydrometer.  I think it's hard to get a well-mixed sample, and my readings often tend to come out lower than anticipated. 

On one batch, I reacted to the lower-than-expected mash gravity reading, added some DME and ended up with a higher FG and higher estimated ABV than I had planned on. 

On the next batch I also got a lower mash gravity reading, but ignored it by making no additions to boost gravity and my FG reading came out spot-on to my original calculations in excel.
   As long as my FG readings match by original calculations, I plan to ignore mash gravity.

   Are you pulling your gravity sample from the mash tun, or from the BK?

I pull my sample after I transfer to the kettle, I figured it would be better mixed at that point. It seems that my refractometer is the problem, it has consistently been about .01 lower than my hydrometer measurements.

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[denny]

It seems that my refractometer is the problem, it has consistently been about .01 lower than my hydrometer measurements.

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Which is why I have 3 refractometers that sit unused.

[brewsumore]

I only use my refractometer for a quick and ballpark full kettle pre-boil reading.

[Lazy Ant Brewing]

I seem to have a problem with pre-boil gravity readings with a hydrometer.  I think it's hard to get a well-mixed sample, and my readings often tend to come out lower than anticipated. 

On one batch, I reacted to the lower-than-expected mash gravity reading, added some DME and ended up with a higher FG and higher estimated ABV than I had planned on. 

On the next batch I also got a lower mash gravity reading, but ignored it by making no additions to boost gravity and my FG reading came out spot-on to my original calculations in excel.
   As long as my FG readings match by original calculations, I plan to ignore mash gravity.

   Are you pulling your gravity sample from the mash tun, or from the BK?

I do BIAB and obtain the sample after I have pulled the grain bag and stirred the wort.